This is because the electrons are up around the oxygen more than they are around the hydrogen. The electrons are spinning around but they're around the oxygen more than they are around the hydrogen. This makes them polar because they have a charge on one end of the molecule. In a nonpolar molecule electrons are evenly distributed.
An immune response is primarily due to the body's white blood cells
recognizing ?
Answer:
Foreign antigens
Explanation:
100 Points Pls Help Me Will Give brainliest And 5 starr
Short Answer
Answer each question in the space provided.
31. Briefly describe how igneous rocks form. How do both of the two main subcategories form?
32. Briefly describe how sedimentary rocks form. How do both of the two main subcategories form?
33. Briefly describe how metamorphic rocks form. How do both of the two main subcategories form?
Answer: 31, Igneous rocks are formed from lava or magma. Magma is molten rock that is underground and lava is molten rock that erupts out on the surface. The two main types of igneous rocks are plutonic rocks and volcanic rocks. Plutonic rocks are formed when magma cools and solidifies underground
32, Sedimentary rocks can be organized into two categories. The first is detrital rock, which comes from the erosion and accumulation of rock fragments, sediment, or other materials—categorized in total as detritus, or debris. The other is chemical rock, produced from the dissolution and precipitation of minerals
33, Rocks are formed on Earth as igneous, sedimentary, or metamorphic rocks. metamorphic rocks form from heat and pressure changing the original or parent rock into a completely new rock.
What can farmers use to prevent the harming of beneficial insects?
a.
spray insecticides
c.
new pesticides
b.
natural pest control
d.
non-aerosol insecticides
Answer:
Natural pest control
Explanation:
Because its a way to be eco friendly using natural sources which does not harm insects
Tickleback evolution lab final quiz 1. how did some ancestral sea-run stickleback populations come to live exclusively in fresh water? these populations swam to freshwater lakes to spawn and then never returned to the ocean because there were fewer predators in lakes. they became trapped in lakes that formed at the end of the last ice age. they don't actually live exclusively in fresh water; they only live in fresh water at certain stages in their lives. they developed traits that made them better adapted to fresh water and, as a result, had to move to a freshwater environment to survive.
Answer:
The correct answer is "some stickleback populations come to live exclusively in fresh water they became trapped in lakes that formed at the end of the last ice age".
Explanation:
There are different types of speciation. Allopatric speciation consists of the geographic separation of a continuous genetic background so that it can give place to two or more new geographically isolated populations. Some barriers might impede the genetic interchange or genetic flux, making a place to two new populations that are separated and can not get together to mate anymore. Glaciation is one of the most important drivers of speciation and production of different phylogeographic structures by vicariance. Glacials originate isolated gene-pools that accumulate differences that end in reproductive isolation. Melting of the ice also generated divergence and speciation, as land appearance acted as a barrier for some populations.
During the last glaciation, stickleback fishes were able to reach certain new places or areas that provided better conditions to inhabit. There were fewer predators and more available food sources that made these new areas to be a better choice. These new grounds were lakes and were the product of ice melting. But at a certain point, as ice melting increased, the land started to show up again and became a barrier for this species. Animals that were living in lakes could not go back to the sea, they were trapped so they had to adapt to living exclusively in lakes. This species diverged and suffered speciation.
This wood mouse is eating a blackberry. The wood mouse's small intestine will absorb particles of important nutrients, including sugar, water, and vitamins. But some waste from the blackberry will be left over.
What happens to waste from food? Select all that apply.
A.the waste is released from the body B.the waste is moved through the large intestine C.the waste is released into the blood or D.water from the waste is absorbed in large intestine (multiple choice)
Answer:
B
D
A
Explanation:
The essential nutrients and minerals are absorbed from the waste as they pass through the small intestine. From the small intestine, the waste is allowed to pass through the large intestine where it absorbs excess water.
After the absorption of excess of waste, the remaining solid waste is known as feces and then it is thrown out of the body.
Option, B,D and A are correct
what connects the pharynx and the trachea
Answer:
Larynx.
Explanation:
The larynx is the organ that connects the lower part of the pharynx with the trachea.
Primary succession occurs in an area that has:
1).Soil
2).Some soil
3).No soil
4).None of these
Answer:
3, No Soil
Explanation:
Which of these statements is true about autotrophs, but not heterotrophs?
A. They use sugar and oxygen to make carbon dioxide and water.
B. They use chlorophyll and oxygen to make carbon dioxide and water.
C. They use sunlight, water, and carbon dioxide to make sugars.
D. They use sunlight, water, and oxygen to make chlorophyll.
plz help
Answer:
c
Explanation:
The statements is true about autotrophs, but not heterotrophs is that they use sunlight, water, and carbon dioxide to make sugars. Thus, option C is correct.
What plants use to make food?The plants use sunlight, water, and carbon dioxide to make sugars as well as food. Organisms can be divided into autotrophs and heterotrophs according to their pathway of producing food and energy. Heterotrophs are that organism which depend on another organism for their food and energy. They get their energy from carbohydrate, protein, and fat.
Those organisms that are able to make and produce energy from energy-containing organic molecules such as glucose from inorganic raw material such as water and by using light energy such as sunlight are autotrophs. Plants are the prime autotrophs, they produce their food and energy which is sugar from water, sunlight and carbon dioxide using photosynthesis.
Therefore, The statements is true about autotrophs, but not heterotrophs is that they use sunlight, water, and carbon dioxide to make sugars. Thus, option C is correct.
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List at least three types of residential waste that can pollute a watershed.
Answer:
FertlizersMotor oil Plastic bags.Explain why an increase in CO, in Earth's atmosphere, might cause the temperature of the atmosphere to increase and lead to climate change.
Answer:
When the carbon dioxide concentrations rise, the air temperature will rise as well due to the greenhouse gases heating up and multiplying.
Explanation:
Carbon dioxide causes about 20 percent of Earth's greenhouse effect; water vapour accounts for about 50 percent; and clouds account for 25 percent. ... Likewise, when carbon dioxide concentrations rise, air temperatures go up, and more water vapour evaporates into the atmosphere—which then amplifies greenhouse heating.
The actual exchange of gas occurs at the
Answer:
gas station, or butt
Explanation:
the gas station can fill your car and exchange gas with the pump. when you fart you exchange gas with the air.
PLEASE HELP
1. Which is the simplified version of Kepler’s third law when one of the planets being compared is Earth?
T=r^2
T^2=r^3
T^2=r
T^3=r^2
2. Which of the following are effects of melting sea ice? Select the two correct answers.
The exposed water can radiate more heat to the atmosphere than it could when insulated by the ice cover.
The exposed water reflects back more sunlight than did the ice.
The exposed water absorbs more thermal energy from the sun than did the ice
The exposed water absorbs heat and then sinks, replaced by cooler water.
3. A group of scientists are studying observable matter in a cluster of galaxies. They conclude that the cluster has only a small percentage of the mass required to keep it from flying apart. Why does the cluster remain intact?
The orbital speed of the galaxies in the cluster is slow enough to keep the cluster intact.
Dark matter provides the mass and gravity needed to keep the cluster together.
The orbital speed of the galaxies in the cluster is fast enough to keep the cluster intact.
Baryonic matter provides the mass and gravity needed to keep the cluster together.
Answer:
1. T^2=r^3 ( or T² = r³)
2. "The exposed water reflects back more sunlight than did the ice"
and
"The exposed water absorbs more thermal energy from the sun than did the ice'
3. Dark matter provides the mass and gravity needed to keep the cluster together.
Explanation:
1. Which is the simplified version of Kepler’s third law when one of the planets being compared is Earth?
Kepler's Third law of planetary motion is the ratio of the square of the orbital period of a planet is to the radius of orbit of a planet or those of other planets.
This means that, Kepler's Third law of planetary motion states that the square of the orbital period of a planet is proportional to the cube of the semi-major axis of its orbit.
Mathematically, Kepler's Third last is represented as
T² : r³
= T² = r³
Therefore, the second option,T^2=r^3 which is equivalent to T² = r³ is the correct option
2. Which of the following are effects of melting sea ice? Select the two correct answers.
The melting of sea ice causes a lot of changes in the climate of an environment.
The presence of sea ice in oceans, reduces the surface area thereby causing a minimal reflection of sunlight but once sea ice melts, the surface area of the water is increased and this would results in a reflection of sunlight.
The sea ice absorbs less thermal energy or radiation from the sun(solar energy) and keeps the surface cooler but once the sea ice is melts, the resulting water, absorbs a lot of thermal energy or radiation from the sun, causing the surface of the water to be hot.
Therefore, the options "The exposed water reflects back more sunlight than did the ice" and
"The exposed water absorbs more thermal energy from the sun than did the ice" are the correct options.
3. A group of scientists are studying observable matter in a cluster of galaxies. They conclude that the cluster has only a small percentage of the mass required to keep it from flying apart. Why does the cluster remain intact?
It has been observed that galaxies present in the solar system have an attraction for one another such that they are drawn to each by force of gravity that is present in the solar system. And because of these, galaxies form clusters in the solar system.
Dark matter is a large amount of matter that is present in the solar system. Dark matter is the reason by which galaxies can form and maintain the clusters that they form around each other because it provides them with the force of gravity and sufficient mass that the galaxies require to prevent them from separating or flying away(apart) from one another
Therefore, the option "Dark matter provides the mass and gravity needed to keep the cluster together" is correct.
The simplified version of Kepler’s third law in a situation when one of the planets is compared to Earth will be T³ = T².
The effects of melting sea ice include:
The exposed water reflects back more sunlight than did the ice.The exposed water absorbs more thermal energy from the sun than did the ice.A cluster will remain intact because the dark matter provides the mass and gravity needed to keep the cluster together.
It should be noted that Kepler's third law of planetary motion simply represents the ratio of the square of the orbital period of a planet is to the radius of orbit of other planets. This can be expressed mathematically as T³ = T².
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Natural Selection
define:
also known as:
define fitness:
what two factors drive natural selection?
how does variation affect natural selection?
Answer:
mhm
Explanation:
During a lab experiment, Rahul looks at six unlabeled slides showing different stages of the cell cycle. The teacher asks Rahul to place the slides in order, starting with interphase. In what order should Rahul place the slides?
Answer:
interphase → prophase → metaphase → anaphase → telophase → cytokinesis
Explanation:
Base on the scenario been described in the question, Rahul looks at six unlabeled slides showing different stages of the cell cycle the correct Rahul to place the slides in order, starting with interphase is as follows
interphase → prophase → metaphase → anaphase → telophase → cytokinesis
This is the correct order Rahul should place the slides.
17. If the cost of separating a mineral from waste rock becomes too great, the mineral may no longer be classified as
an ore. This happens because
a. the mineral can no longer be mined at a profit
b. the mineral has lost its usefulness
c. the demand for the mineral has decreased
d. none of the above
Answer:
A. the mineral can no longer be mined at a profit.
Explanation:
In the case when the separating cost a mineral from the wastage cost so this should occur at the time when the mineral should not be longer be mined at the profit.
What is a mineral?The mineral should arise at a non-organic element or the compound that should be along with the internal structure also the attribute of the composition of the chemical should be considered. Its examples should be mics, quartz, etc. Now in the case when the separating cost a mineral from the wastage cost so it should be too big so option a is correct.
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A. 25%
B. 50%
C. 75%
D. 100%
Answer:
B. 50%
Explanation2 of the offspring are heterozygous (Yy). 2/4 = 50%
Answer: 50%
Explanation:
In fruit flies, red eyes are a dominant trait. A scientist crossed a
heterozygous red eyed fruit fly with a white eyed fruit fly. What color
eyes would the scientist expect to see in the fruit fly offspring?
Select one
50% Red eyes, 50% White eyes
75% Red eyes, 25% White eyes
0% Red eyes, 100% White eyes
100% Red eyes, 0% White eyes
Answer:50 50
Explanation:
Many scientists believe that dinosaurs became extinct due to
O floods caused by strong storms.
O a harmful genetic mutation.
O the introduction of a predator.
O an asteroid impact
Answer:
an asteroid impact
Explanation:
The asteroid that formed a crater located on the edge of the Yucatan peninsula thought to be responsible for the mass extinction of dinosaurs.
Answer:
Its D an asteroid impact.
Explanation:
:)
What type of mutation has occurred?
Below are two sequences of a segment of DNA.
Normal sequence TGA CAC TAG
Mutated sequence TGA CCT AG
Deletion mutation
Nonsense mutation
Insertion mutation
Substitution mutation
Answer:
substitution mutation
Answer:
substitution
Explanation:
HELPPPPPPP!!!!!!
An interglacial is a period of time that occurs between Ice Ages. During previous interglacials, the CO2 levels in the atmosphere were about 300 parts per million (ppm). In 2013, they were approximately 420 ppm. Rounding to the nearest percent, what is the percent increase in CO2 between these two time periods?
Answer:
40% increase
Explanation:
Percentage Increase Formula:
Percentage Increase=[(Final Value−Starting Value)/|Starting Value|] ×100%
To Calculate Percentage Increase:
1) Subtract final value (later value) minus starting value (initial value)
2) Divide that amount by the absolute value of the starting value (initial value)
3) Multiply by 100 to get percent increase
Keep in mind: If the percentage is negative, it means there was a decrease and not an increase.
So for your problem,
[(420-300)/300]*100% = 40% increase
which of the four DNA strands match the strand in the diagram by base pairing ?
Answer: I believe the answer you're looking for is Adenine goes with Thymine and Cystosine goes with Guanine.
Hope this helps!!
The four DNA strands that match the strand in the diagram by base pairing is GGTGACT. The correct option is A.
What is base pairing?A base pair, which consists of two nucleobases joined by hydrogen bonds, is the basic building block of double-stranded nucleic acids.
They contribute to the folded shape of both DNA and RNA and serve as the building blocks of the DNA double helix.
base pair of DNA. The nitrogen-containing bases adenine (A), thymine (T), and cytosine (C), as well as guanine (G), couple together under normal conditions.
The structure of DNA is created by the binding of these base pairs.
In the given sequence, CCACTGA the base pairing can be done as GGTGACT.
Thus, the correct option is A.
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Your question seems incomplete, the missing image is:
Which is the best reason that a geologist might carry a small dropper bottle filled with hydrochloric acid
when doing fieldwork?
to wash rock samples to make them easier to study
to wear away large areas of rock to see what is underneath
to test for the presence of carbonate minerals in a rock
to use as an emergency eyewash in case rock dust gets in the eyes
Answer:
C, to test for the presence of carbonate minerals in a rock
Explanation:
I did this a few weeks ago on Edge. Hydrochloric acid isn't for rock washing, they wouldn't use it to wear away rocks since it'd ruin the sample I think, and you will go blind if you put it in your eyes
Geologist carry dropper bottle filled with hydrochloric acid when doing fieldwork is to test for the presence of carbonate minerals in a rock.
Test for carbonate mineralsHydrochloric acid is used to test for presence of carbon iv oxide in compounds.
When hydrochloric acid reacts with carbonates, it produces effervescent due to the prensence of carbon iv oxides in the compound.
Geologist will use this acid (hydrochloric acid) to check if the rock sample contains carbonate minerals.
Thus, the best reason that a geologist might carry a small dropper bottle filled with hydrochloric acid when doing fieldwork is to test for the presence of carbonate minerals in a rock.
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what best describes a tetrad
Answer:
The tetrad is the four spores produced after meiosis of a yeast or other Ascomycota, Chlamydomonas or other alga, or a plant.
A. 25%
B. 50%
C. 75%
D. 100%
Answer:
B. 50%
Explanation:
The yellow trait is dominant (uppercase Y), so the heterozygous pairs (Yy) as well as the homozygous dominant pairs (YY) would be yellow. There are 2 pairs of Yy there for 50% of the offspring would have a yellow pod.
Answer:
A.)25%
Explanation:
hope i helped
how do plants get nitrogen out of them?I've tried a lot of websites and it didn't work
Pretty sure its in the process of photosynthesis
Which best describes the different features or a plant life cycle
Answer:
The different features of the plant cycle can be based described as zygote is a diploid cell that is produced by fertilization. Explanation: zygote is formed due to the fusion of the female and male gamets. This is a type of sexual reproduction that takes place in plants.
Explanation:
Select all statements which describe the role of calcium in the soil/plant environment.
Answer: the statements are not given, so I will state the role of calcium in plants.
Calcium pectate, is responsible for holding together the cell walls of plants, it is also used in activating certain enzymes and to send signals that coordinate certain cellular activities in plants. Calcium helps to maintain chemical balance in the soil, it reduces soil salinity, and improves water penetration within soil.
When there is calcium deficiency, it leads to localized tissue necrosis causing stunted plant growth, dead leaf margins or curling on the leaves, and eventual death of terminal buds and root tips of the soil/plant.
Excess levels calcium in the soil can reduce a plant's uptake of other important nutrients such as phosphorus, magnesium, boron, potassium, copper, zinc or iron, leading to deficiencies of these nutrients.
What are the effects of soil pollution?
Answer:
Soil pollution produces negative effects for the environment.
Explanation:
Soil pollution can cause many different negative effects for the environment and for organism health. Some effects are:
Nutrient imbalance - plants cannot get enough nutrients in one area since the soil is either devoid of nutrients or high one 1 nutrient and too low on othersAcidification - pollution can cause the soil to become acidified, affecting organisms and the water cycle. This acid will be harmful to plants and harmful to animals drinking it. Since it also affects the water cycle, it can affect humans by burning skin if touched or polluting our drinking sourcesContamination of groundwater - with soil pollution, it can seep deep into the Earth. This can cause natural aquafers and underground lakes/water to become polluted as well, giving us even less freshwaterAll in all, soil pollution is not positive at all and should be reduced at all costs to help nature and our planet Earth.
What do the arrows tell us in a food chain?
The way light is radiated from the sun.
The direction of energy movement.
The movement of each organism in their habitat.
The flow of water within an ecosystem.
_____ are the structures that assemble proteins using the instructions provided by DNA.
Lysosomes
Organelles
Ribosomes
Nuclei
Answer:
Ribosomes?
Explanation:
Answer:
Ribosomes
Ribosomes are the structure that is in the nucleus to assemble the proteins.
