Which is an example of a vestigial structure?

A) The flipper of a whale
B) The wings of a bird
C) The tailbone of a human
D) The eyes of a bat

Answers

Answer 1

Answer:

C) the tailbone of a human

Humans no longer have tails due to evolution because we don't need them. The other answers are body parts that are useful to those animals.

Hope this helps!


Related Questions

What are the two main types of minerals?

Answers

Answer:

The two main types of minerals are macro minerals and trace minerals.

Explanation:

Macro means large in Greek. And your body needs larger amounts of macro minerals. Calcium, phosphorus, magnesium, sodium, potassium, chloride, and sulfur make up the macro mineral group.

A trace of anything indicates that only a small amount of it exists. Even while your body requires trace minerals, it only requires a small amount of each. Iron, manganese, copper, iodine, zinc, cobalt, fluoride, and selenium are examples of trace minerals.

Explain the general distribution of life in aquatic systems as a function of chemistry, geography, light, depth, salinity, and temperature.

Answers

Different types of organisms can exist in a variety of aquatic environments due to the fact that they can vary significantly from place to place and that organisms within each water system will have evolved to adapt to their specific environment.

How does light affect aquatic life?

Sunlight plays a vital role in the ocean’s ecosystem. First, sunlight enters the water column, warms it, creates currents, and is then absorbed by phosphorous-rich phytoplanktons. Phytoplanktons use the energy captured by phototrophs (pigments like chlorophylls) to convert water and nutrients into organic matter.

Light availability determines the types of organisms that can live in a particular part of an aquatic environment. The deeper the water depth, the less light it can penetrate until there is no light at all.

The salinity of water affects its density which in turn affects the movement of ocean currents. It may also affect marine life which needs to regulate the intake of salt water. There is a relationship between salinity, temperature, and water density. Therefore, any change in temperature or water density will affect the salinity of the water in the area.

Water chemistry parameters (pH, dissolved organic carbon, and hardness) play a role in metal toxicity by influencing the bioavailability of aquatic species of metals in water.

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Which material is the medium of ocean waves?
A. Sand
B. Water
O C. Air
O D. Rock
SUBMI

Answers

Answer:

Water

Explanation:

A medium is the substance through which a wave can propagate. Water is the medium of ocean waves.

What part of the digestive system absorbs nutrients that our bodies need?
A. Mouth

B. small intestine

C. stomach

D. large intestine

Answers

Answer:

small intestine

.

is the correct answer

Answer:

B. small intestine

Explanation:

Small intestine absorbs the nutrients that our bodies need.

I’m leaning more into c but I need help ASAP please...

Answers

Hamburger cheese burger big mac wopper
C is the correct answer

Base your answers to questions 14 and 15 on the information in the diagram below and on your knowledge of biology. A) Finches with crushing bills eat only animals for food. B) Finches that eat animals always have larger beaks than finches that eat plants. C) Finches with grasping bills usually eat animals for food. D) Finches that eat plants all have very large beaks. 14. Based on the information in the chart, which statement is correct

Answers

Answer:

D) Finches that eat plants all have very large beaks.

Explanation:

Finches that eat plants have very large beaks because plants are big in size which can only be eaten with large beak. Those finches that lives in the environment having nuts and seeds having large beaks due to the big size of seeds and plant parts so that's why we can say that finches who feeds on plants parts have larger beaks as compared to those finches who feeds on insects.

Choose the sentence that correctly uses pronouns.
Whom stopped to pay attention to the street performer?
Everyone from children to dogs out for walks stopped to listen to she.
Him enjoyed her unusual style and mix of instruments.
The singer herself wrote that beautiful song.

Answers

[tex]\sf\purple{D.\:The\: singer\: herself \:wrote \:that\: beautiful\: song.\:✅}[/tex]

[tex]\large\mathfrak{{\pmb{\underline{\orange{Happy\:learning }}{\orange{!}}}}}[/tex]

Answer:The singer herself wrote that beautiful song.

Explanation:

I got it right when i took the test

Which iS required for both anaerobic
respiration and aerobic respiration?
oxygen
water
mitochondria
glucose

Answers

Answer:

glucose

Explanation:

bc i said so

You are a forensic scientist about to enter one of two parallel universes: in one, you will be unable to use physics in any of your investigations; in the other, you will be unable to use chemistry in your investigations. Provide an example of a type of forensic science and explain how and why it would be impacted in each universe

Answers

Answer:

ik ben enn appel , ik been een mel vrow

Explanation:

Students are studying the length of time that different battery brands can keep flashlights
operating. Which of these should remain constant in this investigation?
A. The length of time
B. The color of the flashlights
C. The type of flashlights
D. The brand of the batteries

Answers

The type of flashlights (c)

What part of the digestive system absorbs nutrients that our bodies need?
A. Mouth

B. small intestine

C. stomach

D. large intestine

Answers

The small intestine

Answer:

B. small intestine

Explanation:

The small intestine absorbs the most nutrients that our bodies need.

Garlic mustard has been introduced to the beetles ecosystem. Describe what would happen to the beetles population as a result and explain why.

Answers

Answer:

It would collapse

Explanation:

Garlic mustard also produces root exudates that inhibit the growth of important soil fungi and leaf chemicals that kill native butterfly larvae that feed on the plant

In addition, invertebrates and other consumers that rely on these natural plant species for food are harmed by the spread of this invasive "weed". Garlic mustard also produces root exudates that inhibit the growth of important soil fungi and leaf chemicals that kill native butterfly larvae that feed on the plan

Garlic mustard is an invasive plant species that is known to negatively impact native plant populations in ecosystems.

What is invasive plant?

An invasive plant is a non-native plant species that is introduced to an ecosystem and has the ability to spread and negatively impact native plant and animal populations.

Garlic mustard is known to release chemicals that inhibit the growth of other plant species, including some that the beetles may rely on for food.

This could lead to a reduction in food availability for the beetles, which may cause a decline in their population.

Additionally, if the beetles are not adapted to feeding on garlic mustard, they may not be able to digest or utilize the plant efficiently, leading to further declines in population.

Thus, the impact of garlic mustard on the beetle population will depend on the specific beetle species and the extent to which they rely on native plant species for food.

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What is DNA (Deoxyribose Nucleic Acid)?

Answers

DNA is a complex molecule that contains all of the information necessary to build and maintain an organism.

DNA ( Deoxyribose Nucleic Acid ) is a molecule.

and its where a bunch of atoms stuck together.

disadvantages of using inorganic manure​

Answers

Answer:

Inorganic fertilizers are not entirely composed of the nutrients needed by the plants. It also contains salts and other compounds. These are not absorbed by the plants so they are left behind in the soil and build up over time.

Que sucedería con la especie humana si debido a una futura mutación genética sus células no pudieran realizar los procesos de mitosis y meiosis

Answers

Answer:

la vida no podría continuar sin los procesos de división celular  

Explanation:

La mitosis es el proceso de división celular mediante el cual se producen dos células idénticas a partir de una sola célula. Durante la mitosis la célula crece y duplica la cantidad de ADN, con lo cual exactamente el mismo contenido de información genética es trasmitido a las sucesivas células que el proceso de mitosis va a dar origen. Por otra parte, la meiosis es un proceso celular en el cual se producen dos divisiones nucleares y citoplasmáticas (meiosis I y meiosis II) las cuales son precedidas por una fase de replicación del ADN. En la especie humana, la mitosis da lugar a células diploides (2n) con dos set completos de cromosomas homólogos, mientras que la meiosis da lugar a cuatro células haploides (n) llamadas gametos (el gameto masculino es el espermatozoide y el gameto femenino es el óvulo) las cuales contienen la mitad del número cromosómico al de la célula de origen. En organismos eucariotas pluricelulares tales como la especie humana, la función de la mitosis es producir más células somáticas (soma: cuerpo) con idéntico material genético, mientras que la función de la meiosis es producir células aptas para el proceso de reproducción, es decir, células con la mitad del material genético que se fusionarán para generar una célula diploide o zigoto a partir del cual y mediante sucesivas mitosis se desarrollará un organismo adulto.

what animal has 8 hearts?​

Answers

Answer:

no animal has 8hearts

Explanation:

tho octopus have 3hearts

If the xylem in a young tree is damaged, which process is first affected?
A. performing photosynthesis

B. transporting sugar to the roots

C. transporting water to the leaves

D. absorbing water from the soil

Answers

Answer:

[tex]transporting \: water \: to \: the \: leaves.[/tex]

Explanation:

Xylem are cells in the root, stem and leaf that transport water and dissolved mineral salts from the soil to the leaf of plants.

Answer:

C. transporting water to the leaves

Explanation:

If the xylem in a young tree is damaged, the process that is first effected is the transporting of water to the leaves. So, option (C) is the correct answer.

When cells join together, what is formed?
A. Tissue

B. Organs

Answers

Answer:

a.tissue

Explanation:

when cells join together tissues are formed

when tissue join together organs are formed

Answer:

A. Tissue

Explanation:

The cells join together to form tissue. So, option (A) is the correct answer.

The burning of fossil fuels contributes to the addition of greenhouse gasses to the atmosphere. These gases trap thermal energy in the Earth’s atmosphere. Which of the following would be the most reasonable changes that could result from an increase in the burning of fossil fuels? *

a.The air all over the globe would become dirtier.
b.There would be a global rise in temperatures.
c.Ecosystems would become more diverse.
d.Rates of photosynthesis would decrease.

Answers

Answer:

There would be a global rise in temperature.

crossing-over can occur during meiosis I in:
a. prophase I.
b. metaphase I.
c. anaphase I.
d. telophase I.

Answers

Answer:

b. metaphase l.

I’m pretty sure it’s A) prophase I

Describe how the jump rope could be used to model the cell membrane of a plant
cell.

Answers

Answer: Plants can use the energy from sunlight to turn water and carbon dioxide into. When the cell has enough organelles to make two cells, the division process starts. Let's discuss the process of photosynthesis again, this time taking a closer look at it. Just A long rope to represent the cell wall.

Jump rope is thin and elastic which is made by twisting two threads together which somewhat looks like a cell membrane can be used as a model for plant cell membrane.

What is cell?"The cell is structural and functional unit of life."Every organisms are made up of one or more number of cells.Each cell have various organelles that perform specific functions.What is cell membrane?"It is the outer layer of cell that separates interior of the cells to their surroundings."It is thin and flexible.Cell membrane is composed of bilipid layer in which proteins are embedded on it.It act as a semi-permeable membrane that only only specific molecules to pass through it.

Hence, the thin and elastic nature of jump rope could be used to model the cell membrane of a plant cell.

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You observe a tissue under a microscope. There appears to be a lumen on one side of the issue. Lining this lumen is a single layer of epithelial cells that seem to have long, fingerlike projections Beneath the projections, the cells seem to have the shape of shoeboxes and are packed tightly together. What type of tissue are you looking at? A. stratified squamous epithelium B. simple columnar epithelium C. simple cuboidal epithelium D. transitional epithelium

Answers

Answer:

D. Transitional epithelium

Explanation:

PLEASE!! I HAVE TWO TO WRIGHT IM CURRENTLY DOING THE OTHER!!! 100PTS (Science)

Part E: Writing Your Paper

Using your materials from this task, write your research paper. Its length should be 1,000 to 1,250 words. When you’ve finished writing the paper, be sure to proofread your work to catch any errors in grammar, spelling, logic, or organization. Submit your completed paper along with this activity.
Course Activity: Human Effects on Ocean Ecosystems:Writing a Research Paper
In this activity, you will prepare a 1,000- to 1,250-word research paper about the effects of human activity on ocean ecosystems. You will focus on one particular human activity that has a negative effect on the ecosystem. You’ll also compare and contrast at least three existing solutions to prevent or manage the problem. The human activity you choose should be specific, be realistic, and have predictable effects on the ecosystem. For example, deforestation is a specific human activity that has a negative effect on forest ecosystems. At the end of the paper, you will write a one- to two-paragraph proposal describing a program to educate citizens on this problem and encourage them to do their part to prevent it.

Answers

Mark Brainliest please


Throughout human existence we have relied on the oceans – for food, as a waste dump, for recreation, for economic opportunities and so on. However, it’s not only our activities in the marine environment that affect life in the sea – it’s also the things we do on land.

With more than half the world’s population now living within 100 kilometres of the coast, it’s not surprising that our activities are taking their toll. Human impacts have increased along with our rapid population growth, substantial developments in technology and significant changes in land use. Over-fishing, pollution and introduced species are affecting life in the sea – and New Zealand is no exception!


Threats to marine habitats

Human actions at sea and on land are putting increasing pressure on the ocean and the species that live there.

Fisheries

Humans living near the coast have probably always used the ocean as a source of food. However, with advances in fishing equipment, larger ships and new tracking technologies, many fish stocks around the world have reduced significantly. Fish stocks on continental shelf areas are now widely considered to be fully or over exploited. Aside from reducing fish stocks, unsustainable fishing practices can have other negative impacts on the marine environment. For example, some fishing techniques such as dredging and trawling can cause widespread damage to marine habitats and organisms living on the sea floor. These techniques also often capture non-target species (known as bycatch) that are then discarded.


Rights: Ra Boe, CC BY-SA 2.5
Commercial fishing boat

Fishing was probably the first use of the oceans by humans. In the last century, significant increases in commercial fishing have resulted in the over-exploitation of many fish stocks.

In New Zealand, fisheries are managed by a quota system that sets catch limits for commercially important species and aims at sustainable management of our fish stocks. The Royal Forest and Bird Protection Society (NZ) publishes the Best Fish Guide to try and encourage us to make more sustainable choices when purchasing seafood. The list evaluates fish stocks and bycatch levels and the fishing methods used.

Pollution

Our oceans have long been used as an intentional dumping ground for all sorts of waste including sewage, industrial run-off and chemicals. In more recent times, policy changes in many countries have reflected the view that the ocean does not have an infinite capacity to absorb our waste. However, marine pollution remains a major problem and threatens life in the sea at all levels.


Rights: Jeff Schmaltz, MOD IS Land Rapid Response Team at NASA GSFC
Phytoplankton bloom

This image shows a large phytoplankton bloom that occurred around New Zealand in October 2009. The image was acquired by the Moderate-resolution Imaging Spectroradiometer (MODIS), flying aboard NASA’s Terra satellite.

Some marine pollution may be accidental, for example, oil spills caused by tanker accidents. Some may be indirect, when pollutants from our communities flow out to sea via stormwater drains and rivers. Some effects may not be immediately obvious, for example, bioaccumulation – the process where levels of toxic chemicals in organisms increase as they eat each other at each successive trophic level in the food web.


Link :

https://www.khanacademy.org/science/high-school-biology/hs-ecology/hs-human-impact-on-ecosystems/a/hs-human-impact-on-ecosystems-review


https://www.sciencelearn.org.nz/resources/144-human-impacts-on-marine-environments

Fossil fuels deep in the earth act as a carbon reservoir, storing it for millions 1 point
of years. What happens when humans extract and burn fossil fuels for
energy?
Carbon Dioxide levels increase in the atmosphere
Oxygen levels in the atmosphere decrease
There is more oxygen in the atmosphere
Carbon Dioxide is removed from the atmosphere
What elements make up most of the earth's.

Answers

Answer: By burning fossil fuels, people are changing the carbon cycle with far-reaching ... The rest is in the ocean, atmosphere, plants, soil, and fossil fuels. ... Graph of oxygen isotope ratios in the deep ocean for the past 67 million years. ... The increased temperature results in higher evaporation rates and a wetter ...

Explanation:

In the presence of lidocaine, the action potential was NOT affected at R1 because _______. In the presence of lidocaine, the action potential was NOT affected at R1 because _______. lidocaine doesn't have an effect on the generation of action potentials lidocaine was applied upstream of R1 lidocaine was applied downstream of R1 there are no voltage-gated sodium channels to be affected

Answers

Answer:

In the presence of lidocaine, the action potential was NOT affected at R1 because lidocaine was applied downstream of R1

Explanation:

Lidocaine is an anesthetic that has the power to neutralize neuromal membranes. This anesthetic power allows the ionic fluxes capable of stimulating impulses to be diffused and this allows a dormancy to be achieved. However, when lidocaine is applied downstream to a molecule or structure, the action potential of that structure or molecule is not affected and it may continue to receive impulses.

Respiration is helpful in (1 Point) Removing waste from the body Producing energy within the body Production of proteins Production of carbohydrates

Answers

Answer:

Producing energy within the body.

Explanation:

Which three industries would be the most directly affected if regulations and laws regarding deforestation became stricter?

Answers

Answer: Timber industry, paper industry, furniture industry.

In genomic imprinting, the expression of a genetic disorder depends on

Answers

Answer:

a

Explanation:

a

Which is a characteristic of cancer cells?

A. Cytokinesis stage is skipped
B. Contain multiple genetic change.
C. Cell cyclins function normally.
D. Controlled cell Division​

Answers

Answer:

contain multiple genetic change
B. Contain multiple genetic change

I NEED HELP ASAP A gradual increase in temperature of the Earth's atmosphere caused by gases and pollutants


A.Greenhouse gases

B.Fossil fuels

C.Global warming

D.Climate change

Answers

Global warming

The increase of greenhouse gases result into global warming :)
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When excited what do you do ? How do you express your feelings of excitement, happiness, or joy with others in a non verbal way ? State three natural conditions under which plasmolysis could occur Someone please help me ASAP!! What is the factorization of the trinomial below?2x2 + 11x + 12O A. (2x + 1)(x+12)O B. (2x+3)(x + 4)O C. (2x + 4)(x+3)O D. (2x+6)(x + 2) Two identical loudspeakers 2.0 m apart are emitting sound waves into a room where the speed of sound is 340 m/sec. John is standing 5.0m in front of one of the speakers, perpendicular to the line joining the speakers, and hears a maximum in the intensity of the sound. What is the lowest possible frequency of sound for which this is possible? which two terms best describe the level of organization of life shown in this photo? A 8.6*10^ -6 C charge is places 1.00 m away from a 2.3 * 10 ^ - 4 * C charge. How large is the force of repulsion between the two charges? assssssssssssssssssssssssssssssssss Semi easy-which boxplot represent the 5 number summary The graphs below show measurements from cubeswith different side lengths.Which pairs of variables have a linear relationship?Select two options.24side length and perimeter of 1 face20perimeter of 1 face and area of 1 face16Perimeter of 1 Facesurface area and volumeAarea of 1 face and surface areaside length and volume123456Side Length403632 hey again can u help me with this Find the value of X What is the volume of the solid figure? 3. Find the measure of the exterior angle in the diagram below. What chart can be useful when organizing information before you begin a research report?KWL chartTimelineOrder of Events ChartCause and Effect Chart Complete the problems in measurements. Show answers in simplest terms.e. Joseph has a bag of dog food that weighs 5 lb. He wants to feed his dog 7 oz. of dog food per day, How many days will the bag of dog food last? Plz help me solve this thanks 3x^2 - 4x + 2 = 0 how many solutions does the equation above have? Select the correct answer.A triangle with vertices at A(0, 0), BIO, 4), and C16, 0) is dilated to yield a triangle with vertices at Ato, O), BIO, 10), and C[15, 0). The origin is the center of dilation. What is thescale factor of the dilation?OA 1.5OB.2OC. 2.5OD. 3 Please Find the value of x and y