The following characteristics are based on the type of unconventional hydrocarbon reserve they are associated with.
Tar Sand Shale Oil
associated with sandstone kerogen transformed into oil
very viscous bitumen extracted by hydrofracturing
impermeable source
rock open pit mines
These are all the types under tar sand and shale oil. They are categorized by the above characteristics.
The quantity of fossil minerals discovered during geological investigation and precisely defined at the start of production are referred to as hydrocarbon reserves. In the USSR, a classification system was created in 1928.
Oil sands are regarded as an unconventional source of hydrocarbons due to the difficult and expensive process needed to extract and refine them. Yet, they are also a significant source of energy, especially in nations like Canada, which has the greatest oil sands reserves in the world.
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Detrital sedimentary rocks are classified mainly on the basis of... 1) Colors of the cementing minerals
2) Grain sizes of the detrital particles
3) Compositions of soluble minerals
4) Degree of compaction and lithification
Detrital sedimentary rocks are classified mainly on the basis of the grain sizes of the detrital particles. Therefore, the correct answer is the second option.
Detrital sedimentary rocks are rocks that form from the weathering and erosion of pre-existing rocks. This process is known as mechanical weathering. Weathering refers to the breakdown of rock into small particles while erosion involves the transportation of weathered rock by various agents such as water, wind, and ice.
When sedimentary rocks are formed from the transported sediment that has accumulated over time and are cemented together, they are referred to as detrital sedimentary rocks. Detrital sedimentary rocks are characterized by the size and shape of the sediment that they are made up of.
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Mechanical circumstances for dormancy may be broken by ______________ , an artificial method where the seed is scratched or dipped in acid to break down its coat. Dormancy can also be broken naturally through ____________ by rocks, or alternate periods of freezing and thawing.
Mechanical circumstances for dormancy may be broken by scarification, an artificial method where the seed is scratched or dipped in acid to break down its coat. Dormancy can also be broken naturally through abrasion by rocks, or alternate periods of freezing and thawing.
Scarification is the process of breaking the hard outer shell of a seed to allow water to penetrate and initiate germination. This is accomplished by mechanical abrasion (such as rubbing the seed between two surfaces) or by exposing the seed to an acid bath.
The goal of scarification is to reduce the hardness of the seed coat, making it permeable and allowing water to enter and initiate germination.
Abrasion, also known as weathering, is the process of physical breakdown of rocks and soil through forces such as wind, water, or ice. As rocks move and bump against each other, small particles are scraped off and can abrade the outer layer of a seed. This can result in enough weakening of the seed coat to allow the seed to germinate.
Alternating periods of freezing and thawing can also break the dormancy of a seed. This process, known as "cold stratification", involves placing the seed in a moist environment and then subjecting it to temperatures of 4°C (39°F) or below for a period of several weeks or months.
This simulates the conditions that occur in nature during winter, and the temperature fluctuations help to break down the seed's protective coating.
In conclusion, dormancy of seeds can be broken through scarification, abrasion, or cold stratification. By understanding the effects of these processes, gardeners and farmers can ensure that their plants and crops have the best chance of germinating and reaching maturity.
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The type of rocks that are formed by changing previously existing rocks through increases in temperature, increases in pressure, deformation, or chemical reaction is rocks.
The type of rocks that are formed by changing previously existing rocks through increases in temperature, increases in pressure, deformation, or chemical reaction is metamorphic rocks.
Metamorphic rocks are formed from previously existing rocks by changes due to temperature, pressure, deformation, and chemical reactions.
These types of rocks are made up of minerals that have been changed into other minerals or into different forms of the same minerals by heat, pressure, or chemical reactions that occur deep in the Earth's crust and mantle.
It occurs due to geological processes such as tectonic movements, compression, heating, and metamorphism. These rocks can be classified into two types: foliated and non-foliated.
Some examples of metamorphic rocks are marble, gneiss, schist, and slate.
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What is the name of the sedimentary structure depicted in the image?a)Mud cracksb)Ripple marksc)Cross-beddingd)Graded beddinge)Bioturbation structures
Ripple marks is the name of the sedimentary structure depicted in the image.
The sedimentary structure depicted in the image is "ripple marks."What are Ripple Marks?Ripple marks are sedimentary structures that occur on the surface of a sediment layer. In rivers, ocean waves, or wind, they develop as symmetrical or asymmetrical waveforms.
Ripple marks are created by the combined effects of gravity and wind or water currents on sand, silt, or mud. They are found on beaches, riverbeds, and deserts, among other places.
The presence of these marks can indicate the direction and intensity of water or wind movement, as well as the size of sediment grains that make up a sedimentary rock.
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which type of volcanism is often found far from plate boundaries?
Answer: Hot-spot volcanism
Explanation: Volcanoes can also form above a column of superheated magma called a mantle plume. This may happen in areas that are distant from plate boundaries. It is also referred to as a hot spot or intraplate volcanism.
explain the building/structure of Skukuza Airport
Answer:
Skukuza Airport is a small airport located in the Kruger National Park in South Africa. The airport building is a single-story, square-shaped structure made of concrete and steel with large windows, housing a small terminal with a seating area, check-in counters, and a luggage conveyor belt. The airport has a runway made of asphalt, which is 1,600 meters long, and a helipad for emergency evacuations. The design of the building and structure is intended to blend in with the natural surroundings and provide visitors with a comfortable and convenient way to access the Kruger National Park.
Explanation:
Skukuza Airport is a small airport located in the Kruger National Park in South Africa. It is primarily used for transporting visitors to and from the park and is situated close to the Skukuza Rest Camp.
The airport's main building is a single-story structure with a flat roof and a square-shaped design. The building is constructed from concrete and steel, with large glass windows offering views of the surrounding wilderness. The entrance to the building is marked by a covered walkway leading to the main door.
Inside the building, there is a small terminal with a seating area, check-in counters, and a luggage conveyor belt. There are also restrooms and a small coffee shop where visitors can purchase refreshments. The airport's control tower is located adjacent to the main building and oversees all air traffic coming in and out of the airport.
The runway at Skukuza Airport is made of asphalt and is 1,600 meters long, making it suitable for small to medium-sized aircraft. The airport also has a helipad for emergency evacuations and other air support operations within the park.
Overall, the building and structure of Skukuza Airport are designed to blend in with the natural surroundings and provide visitors with a comfortable and convenient way to access the Kruger National Park.
How old is the Pottsville formation in alabama?
answer:
295 ma
The minimum age of the metatonalite sample provides a maximum depositional age of 295 ma- (master of arts).
What is the cause of the difference in surface water salinity between equatorial and subtropical regions in the atlantic ocean?
Answer:
This is because equatorial regions also get a high volume of rain on a regular basis, which dilutes the surface water along the equator. So the higher salinities are found at subtropical, warm latitudes with high evaporation and less precipitation.
Explanation:
Over Earth as a whole, one would expect to observe the smallest variation in temperature from day to day and from month to month- in the center of a large land mass.
- at the North Pole.
- along the Pacific coast of North America.
- high in the mountains in the middle of a continent.
- on a small island near the equator.
The smallest variation in temperature from day to day and from month to month over Earth as a whole is expected to be observed "on a small island near the equator". Thus, D is correct.
This is due to the stable climate conditions found in tropical regions.
As the equatorial regions receive direct sunlight year-round, resulting in consistent warm temperatures. The ocean surrounding small islands helps to stabilize temperatures, as water has a high heat capacity, meaning it can absorb and release heat without much change in temperature.
Additionally, the trade winds that blow across the equatorial regions also contribute to the stable climate conditions found on small equatorial islands.
In contrast, the other options listed, such as a large land mass, a high mountain in the middle of a continent, or the North Pole, all experience greater temperature variations due to factors such as seasonal changes, altitude, or geographic location.
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shapefiles are made of at least three separate files in the windows file system, and frequently include additional files containing info about projections and other auxiliary data. True or False
Shapefiles are made of at least three separate files in the windows file system, and frequently include additional files containing info about projections and other auxiliary data is true
Shapefiles are a type of geospatial vector data format for geographic data that are associated with ESRI. They consist of at least three separate files in the Windows file system and frequently include additional files containing information about projections and other auxiliary data.
These files are stored with specific extensions and are as follows:
.shp (The file with the .shp extension stores the main geometric data about the shapes.), .dbf (The file with the .dbf extension stores the attributes that describe the shapes.), .shx (The file with the .shx extension contains a positional index that allows the .shp file to be read more quickly.).They are known for being cross-platform, which means that they can be used on a variety of software applications, and for their ability to handle multiple layers of data.
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Identify a true statement about how presidential campaign financing has changed over time. A. Almost all candidates since the 2000 elections have opted out of the use of public funding. B. Nearly all presidential candidates since 2000 have used government matched funds to finance their election bids. C. Most candidates have started using soft money contributions since the passage of the Bipartisan Campaign Reform Act in 2002. D. Most candidates since 2000 have been relying on federal funding for their primary campaigns and on dark money contributions for their general election campaigns.
The correct statement about how presidential campaign financing has changed over time is that almost all candidates since the 2000 elections have opted out of the use of public funding therefore the correct option is A.
By concluding out of public backing, campaigners can accept larger benefactions from individual benefactors and have further coffers to spend on their juggernauts. The passage of the Bipartisan Campaign Reform Act in 2002 also redounded in a shift from the reliance on civil backing for primary juggernauts to the acceptance of so- called"
soft money" benefactions. These benefactions aren't subject to the same restrictions as public backing and can give a significant boost to a seeker's crusade. also, the use of" dark money" benefactions has come decreasingly common, with these donations coming from undisclosed benefactors. All these changes have had a significant impact on the way presidential juggernauts are financed.
Hence the correct option is A.
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the suez canal connects the mediterranean to what other sea?
Answer:
The Red Sea
Explanation:
based on the mission of your organization and these recent trends, which of the following regions would you prioritize for forest conservation efforts in the future?
Based on the mission of your organization and recent trends, the region that would be prioritized for forest conservation efforts in the future would be South America.
What is forest conservation?
Forest conservation is the act of preserving and managing forested land, ecosystems, and resources with the aim of achieving sustainable use and societal benefits. Conservation involves the protection and management of natural resources, ecosystems, and habitats.
The aim of forest conservation is to maintain and improve the ecological, economic, and social value of forests for present and future generations. Forest conservation is becoming increasingly important as the planet's population continues to grow, and the demand for resources puts a strain on natural resources.
Because of deforestation, illegal logging, wildfires, and climate change, the world's forests are being degraded and destroyed. Forest conservation is critical for maintaining the earth's biodiversity and ensuring the long-term survival of plant and animal species.
Forest conservation can also provide economic and social benefits by creating jobs, generating income, and supporting sustainable development.
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what does this ancient sedimentary rock rich in iron indicate about the conditions in which it was deposited?
This ancient sedimentary rock rich in iron indicates that the conditions in which it was deposited were likely oxygen-deprived and relatively still.
This is because iron is only able to be deposited and preserved in environments that don't contain significant amounts of oxygen, as it quickly oxidizes in the presence of oxygen.
Also, sedimentary rocks form when sediment is deposited in a relatively still environment, and iron is able to form deposits due to its high density. The environment in which the sedimentary rock was likely deposited was an anoxic (low oxygen) environment, as indicated by its high iron content.
The lack of oxygen and still environment indicates that the ancient environment where this sedimentary rock was deposited was not conducive to life.
In an anoxic environment, there is little to no oxygen to support aerobic organisms, and the still environment would have prevented circulation and the transport of nutrients, making it even less hospitable for life.
The fact that this sedimentary rock contains high levels of iron is a clear indication of the conditions in which it was deposited. This sedimentary rock was likely deposited in an oxygen-deprived and relatively still environment, making it hostile to life.
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which of the following is an example of how rocks will respond to compressional stress? (note: there may be more than one correct answer.) check all that apply. view available hint(s)for part b which of the following is an example of how rocks will respond to compressional stress? (note: there may be more than one correct answer.)check all that apply. elongation normal faulting folding reverse faulting transform faulting
Folding and Reverse faulting is an examples of how rocks will respond to compressional stress. The correct options are B and C.
Rocks can respond to compressional stress in a variety of ways, including folding and reverse faulting. Due to the compressional forces involved in folding, the rocks are bent and deformed. Pushing the rocks together causes reverse faulting, which results in one block moving higher in relation to the other block. At the margins of convergent plate boundaries, compression is the most frequent stress. Tension exists in the separation of rocks. The lengthening or fragmentation of rocks under strain.
Thus, the ideal selections are options B and C.
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T/F: a northern hemisphere ocean basin with a standing-type tidal oscillation will have a standing wave that rotates counterclockwise.
True : A standing wave that moves in the opposite direction of the clock will exist in an ocean basin in the Northern Hemisphere with a standing-type tidal oscillation.
Do tides rotate in ocean basins?Counterclockwise rotation of the tidal crest around the basin continues. On one side of the basin, the tide is high, and on the other, it is low. The tide wave rotates clockwise (viewed from above) in basins of the Southern Hemisphere because the Coriolis deflection is reversed.
The open ocean, in addition to seas and large embayments, are well-served by this so-called dynamic model of tides. A series of cotidal lines that radiate outward from a central node, similar to the spokes on a bicycle wheel, provide ocean scientists with a visual representation of the rotatory motion of the tide wave in a basin. Points where high tide occurs at the same time of day are connected by a cotidal line; They are typically drawn once an hour. Along the coast, the tidal range ranges from zero at the node to a maximum at the antinode.
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Volcanic activity created the _____ that is important to the economy of the village of Vestmannaeyjar on the island of Heimaey, near Iceland.
Volcanic activity created the soil that is important to the economy of the village of Vestmannaeyjar on the island of Heimaey, near Iceland.
What is Vestmannaeyjar?Vestmannaeyjar is a collection of islands situated off the south coast of Iceland, and its literal meaning is "The Westman Islands." The largest of the islands, Heimaey, has a population of roughly 4,000 people. This island's economy is built on fish and fish processing, as well as tourism. The island has been recognized internationally for its exceptional bird watching, due to the high concentration of bird species residing there. Furthermore, the ground that volcanic activity created is also essential to the economy of the village of Vestmannaeyjar on the island of Heimaey.
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based on this week's material match the following as best you can. group of answer choices crossed arms [ choose ] phoneme [ choose ] ebonics [ choose ] indo-european languages\
Crossed arms typically refer to the body language where an individual crosses their arms over their chest. It is often interpreted as a defensive or closed-off posture. However, it can also indicate that the person is comfortable or relaxed.
What is Phoneme?A phoneme is a unit of sound that distinguishes one word from another in a particular language. For example, the words "cat" and "bat" differ by only one phoneme, the initial sound /k/ versus /b/. Phonemes are the smallest units of sound in a language and can be combined to form words.
Ebonics, also known as African American Vernacular English (AAVE), is a dialect of English that is spoken by some African Americans. It includes unique grammatical structures, vocabulary, and pronunciation that differ from Standard English. It has been the subject of much debate and controversy, particularly in the education system, where some argue that it should be recognized as a distinct language and taught as such.
Indo-European languages are a family of languages that includes the majority of European languages, as well as many languages spoken in Asia. This language family is believed to have originated in the Pontic-Caspian steppe region around 4500 BCE and spread through migration and conquest. Some of the most widely spoken Indo-European languages include English, Spanish, French, German, Hindi, Bengali, and Russian.
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The following statements compare and contrast cryovolcanism with regular volcanism. Which are true?
Choose one or more:
A. Cryovolcanism always ejects water ice crystals while regular volcanism always ejects rock.
B. Cryovolcanism operates at a higher temperature.
C. Both eject material from the interior of a planetary body.
D. Only regular volcanism has ever been observed. Cryovolcanism refers to ancient volcanism.
E. Both can be used to help determine the age of the surface of a body.
F. Regular volcanism is driven by a molten rock interior, while cryovolcanism is driven by a cold liquid interior.
The true statements are:
C. Both eject material from the interior of a planetary body.
E. Both can be used to help determine the age of the surface of a body.
F. Regular volcanism is driven by a molten rock interior, while Cryovolcanism is driven by a cold liquid interior.
The correct answer is C, E and F.
Statement A is false because Cryovolcanism can eject various materials, including water ice, ammonia, and methane, while regular volcanism usually ejects molten rock, ash, and gas, statement B is false as Cryovolcanism operates at much lower temperatures than regular volcanism, and the statement D is also false as Cryovolcanism has been observed on several icy bodies in the Solar System, including Enceladus and Europa.
Cryovolcanism and regular volcanism are two types of volcanic activity that occur on planetary bodies in our Solar System. While a molten rock interior drives regular volcanism, Cryovolcanism is driven by a cold liquid interior, usually water or another volatile substance.
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What two specific continents fit together most noticeably?
answer choices
Africa and North America
South America and Europe
South America and Africa
Antartica and Africa
The two specific continents that fit together most noticeably are South America and Africa.
According to the continental drift theory, the continents are not fixed in their positions. They move at a rate of a few centimeters every year. The theory is supported by several pieces of evidence. One of them is the fit of the continents. South America and Africa look like they fit together perfectly. The coastlines of both continents have a similar shape, which indicates that they were once joined.
The rocks in the two continents are also similar, which indicates that they were formed from the same geological processes. For example, there are the same type of rocks found in the Brazilian coast of South America and the west coast of Africa. The fossils of some animals and plants are also found in both continents. They couldn't have crossed the ocean to reach the other continent. This is more evidence of the two continents having been connected in the past.
Antarctica and Africa were also connected at one point. Antarctica was part of Gondwana, which was a supercontinent that included Africa, South America, India, Australia, and Antarctica. They began to break apart around 200 million years ago. This is why the fossils of the same animals and plants are found in Africa and Antarctica. They were once living in the same area before the continents separated.
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What happen to the surface area of exposed rock if a rock is fractured?
A) there are more pieces, but the surface area does not change
B) The surface area does not change because the volume does not change
C) The surface area increases as the rock is fractured
D) The surface area decreases as the rock is fractured
E) both a and b
The surface area increases as the rock is fractured. Therefore the correct option is option C.
Rock fracture is the mechanical breakdown of rock due to stress. The stress can be tectonic or man-made, such as blasting. When rock fractures, it breaks into smaller pieces, which are known as rock fragments or rock blocks. Rock fracture has a significant impact on the surface area of rock.
When rock is fractured, the surface area of the rock increases. This is because a single rock breaks into smaller fragments, each with its own surface area.
Therefore, the correct answer to the given question is: The surface area increases as the rock is fractured.
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5. [5 pts] You're studying genotypes at a gene that you've discovered contributes to Inflammatory bowel disease (IBD). The gene has two alleles: W and v. WW homozygotes produce, on average,
2.2kids
. Wv heterozygotes also produce, on average,
2.2
kids. However, w homozygotes are more likely to have the disease, and therefore, produce, on average,
1.7
kids. What is the relative fitness of the vV genotype? show your work
The relative fitness of the vV genotype can be calculated by comparing it to the relative fitness of the WW genotype. Since WW homozygotes produce, on average, 2.2 kids, and wv heterozygotes also produce, on average, 2.2 kids, then the relative fitness of the WW genotype is 1.0.
Since w homozygotes produce, on average, 1.7 kids, then the relative fitness of the vV genotype is (1.7/2.2) = 0.77. This means that the vV genotype has a lower relative fitness than the WW genotype.
This difference in relative fitness between the WW and vV genotypes is due to the fact that w homozygotes are more likely to have the disease, which reduces their reproductive success.
This is an example of natural selection in action, as individuals with the WW genotype have a higher relative fitness than individuals with the vV genotype, and so the WW genotype is more likely to be passed on to future generations.
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which sentence follows ap style on place names? group of answer choices one of the smallest state capitals is carson city, nev. with about 55,000 residents. one of the smallest state capitals is carson city, nevada with about 55,000 residents. one of the smallest state capitals is carson city, nv with about 55,000 residents. one of the smallest state capitals is carson city, nevada, with about 55,000 residents. one of the smallest state capitals is carson city, nv, with about 55,000 residents. one of the smallest state capitals is carson city, nev., with about 55,000 residents.
According to AP Style, when referring to a place name, the state should be spelled out, and abbreviations should only be used when necessary for space constraints.
In this case, the sentence should read: one of the smallest state capitals is Carson City, Nevada, with about 55,000 residents. This follows AP Style since the state is spelled out, and the abbreviation is not used unless absolutely necessary.
AP Style states that abbreviations should only be used when necessary for space constraints to avoid confusion or misunderstanding. Therefore, in this sentence, the full name of the state should be used.
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This Gigapan image shows a dark metamorphic rock in contact with a lighter igneous rock (granite). Review the statements below, and determine which arecorrect about the dark metamorphic rock on the left in the Gigapan image.Select all that apply.Hint 1.The appearance of foliated metamorphic rocksFoliated metamorphic rocks have had their minerals reoriented into layers pointing the same direction, or in some cases layers of similar compositionminerals. Look again at the dark rock in the Gigapan image for signs of foliation.Hint 2.Using small-scale folds within rocks to determine metamorphic gradeKeep in mind that folding can occur at any scale. Rocks that have undergone high-grade metamorphism are often folded and deformed so that theoriginal layering is no longer flat. The deformation of low-grade metamorphic rocks often causes small bends in the original layers. Look again at thedark rock in the Gigapan image for signs of deformation and small-scale folding.Hint 3.Recognizing foliationFoliation is the pattern of minerals in a rock after it is metamorphosed. Foliation is identifiable as a variation in texture and/or color. Often foliation isexhibited with light and dark bands.
The statements that are correct about the dark metamorphic rock on the left in the Gigapan image are Its minerals have been reoriented into layers, It has undergone high-grade metamorphism and Foliation is identifiable
The dark metamorphic rock in the Gigapan image has foliation, meaning its minerals have been reoriented into layers pointing the same direction or in some cases layers of similar composition minerals. It is also deformed and has small-scale folds, which suggests it has undergone high-grade metamorphism. Foliation is identifiable as a variation in texture and/or color, often with light and dark bands.
So, in summary, the statements that are correct about the dark metamorphic rock on the left in the Gigapan image are:
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Repurposing old quarries or damming fields with piles of soil are inexpensive ways of creating_________ that reduce flooding from surface runoff but do not alter stream flow.
Answer:
c
Explanation:
16. At which latitude and longitude in New York State would a salt mine in Silurian-age bedrock most likely be located? (1) 41°N 72°W (3) 44°N 74°W (2) 43°N 77°W (4) 44°N 76°W 16
The latitude and longitude in New York State that a salt mine in Silurian-age bedrock would be most likely be located would be (4) 44°N 76°W.
How are rock layers formed?Rock layers, also known as strata, are formed by a variety of natural processes. One of the ways is by the settling of sedimentary materials such as sand, mud, and other forms of debris. When these materials accumulate over time, they form layers of rocks. The bottom layer is the oldest while the top layer is the most recent.
In order for a salt mine to be formed, the salt needs to be dissolved in water and carried to a place where it will evaporate. Salt mining is common in areas where ancient salt deposits have been preserved. Salt deposits are often located in evaporite basins. In general, salt deposits are usually found in low-lying areas where water has accumulated and then evaporated, leaving behind large deposits of salt. The correct answer is (4) 44°N 76°W.
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Coal beds originate in ____________. a). shallow lakes in a dry, desert region. b. channels of fast-moving streams. c. deep, marine basins below wave action. d. freshwater coastal swamps and bogs
The right answer is option d) freshwater coastal swamps and bogs. Coal beds are formed from the accumulation of dead plant material that has been buried and compressed over time.
This plant material accumulates in oxygen-poor environments such as swamps and bogs, where it is slowly transformed into peat, a precursor to coal. As more and more plant material is deposited and buried, the weight of overlying sediment compresses the peat, causing it to lose water and become denser. Over millions of years, this process transforms the peat into coal.
Therefore, coal beds are typically found in areas that were once covered by large, freshwater swamps and bogs, such as the Carboniferous period (about 300 million years ago) in North America and Europe.
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if a rock is buried and subjected to high heat and pressure, then uplifted, exposed, eroded away, and deposited, what rock types were involved in the sequence? group of answer choices igneous and sedimentary igneous and metamorphic metamorphic and sedimentary
The rock types that were involved in the given sequence of events are igneous, sedimentary and metamorphic.
What is rock?A rock is a natural occurring substance composed of minerals. It is a hard, naturally occurring substance consisting of one or more minerals that have been consolidated into a solid form.
Igneous rocks: Igneous rocks are formed from the cooling and solidification of molten lava or magma.
Extrusive rocks: These rocks are formed from the solidification of lava, which flows onto the surface of the earth.
Intrusive rocks: These rocks are formed when magma cools beneath the surface of the earth.
Sedimentary rocks: Sedimentary rocks are formed from the accumulation and cementation of small rock fragments, mineral grains, and other organic materials.
Metamorphic rocks: Metamorphic rocks are formed from the transformation of existing rocks under conditions of high pressure, high temperature, or both.
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What does a porphyritic texture indicate about the cooling history of an igneous rock?
The rock cooled entirely on the Earth's surface in a region that regularly varied between high and low temperatures.
The rock cooled entirely underground, first forming the phenocrysts and then forming the groundmass out of different minerals.
The rock began cooling on the Earth's surface, but then was buried under the Earth's surface where it finished cooling.
The rock began cooling under the Earth's surface, but then was moved to above the Earth's surface where it finished cooling.
The rock first began cooling under the Earth's surface, which formed the groundmass. It finished by solidifying the phenocrysts on the Earth's surface.
The porphyritic texture of an igneous rock indicates that the rock began cooling underground, first forming the phenocrysts and then forming the groundmass out of different minerals.
Porphyritic texture is a texture in which a rock contains two distinct crystal sizes. The larger crystals, known as phenocrysts, are usually about 1 to 10 centimeters in diameter and are embedded in a fine-grained matrix known as a groundmass. Porphyritic rocks may be either intrusive (plutonic) or extrusive (volcanic) in origin.
The cooling history of an igneous rock can be revealed by its texture. Porphyritic texture indicates that the rock began cooling underground, first forming the phenocrysts and then forming the groundmass out of different minerals. The phenocrysts continue to form as the rock cools and solidifies on the Earth's surface.
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(Please help, the sooner this is answered the better. Thank you!)
[This is for astronomy but I don't see an astronomy option]
Why is the planet Uranus virtually invisible to the unaided eye?
1. it is very far away from Earth
2. it is obscured by a constant haze
3. its halo bends light around it
4. it does not reflect light
Answer:
It is obscured by a constant haze. ( This may not be correct )
Planet Uranus is virtually invisible to the unaided eye because it is obscured by a constant haze. Hence, option B is appropriate.
What is the meaning of Uranus?The seventh planet from the Sun is Uranus. It bears the name of the Greek sky god Uranus, who is also known as Cronus' father, Zeus' grandpa, and Ares' great-grandfather in Greek mythology. In the Solar System, Uranus has the fourth-largest planetary mass and the third-largest planetary radius.
With a tilt of 97.77 degrees and the only planet whose equator is almost at a straight angle to its orbit, Uranus may have collided with an Earth-sized object long ago. The most intense seasons in the solar system are brought on by this peculiar tilt.
Four times as wide as Earth, Uranus. Uranus' size would be equivalent to a basketball if Earth were a huge apple.
Hence, option B is correct.
Learn more about Uranus here:
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