why do geologist think earths core contains mostly iorn

Answers

Answer 1
Answer:Geologists think earth's core contains mostly iron mainly because they are the heaviest metal, and so they sink toward the center of the earth.Explanation:

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Related Questions

When is it appropriate to use a line graph, bar graph and a pie chart?

Answers

Answer:

When your graphing to data from an experiment.

Explanation:

You use any type of graph when you're doing an experiment because, in the beginning, you start by marking where you started then as time goes on you mark it accordingly. For example, say your starting at 5cm on a plant so on the line/bar graph you make 0 you 5 since that is where you're starting at.  when you water the plant you decide to give it 10cm of water and put it in the sun constantly. A week later of sun and water it grew 10cm, so you mark it on your line/bar graph to show how much it grew over time. Make a little bit more sense?

which type of organism does not need to consume another organism for food

A. omnivore
B. carnivore
C. autotroph
D. decomposer

Answers

Answer:

Autotroph

Explanation:

Answer:

C. autotrophs

Explanation:

Autotrophs are at the first trophic level, hence they don't consume other organisms! I hope this helped! Please mark brainliest :)

Which of the following describes the order in which traits and practices evolved in human ancestors?
A. bipedalism, tool use, large brains, modern behavior.

B. large brains, bipedalism, tool use, modern behavior.

C. large brains, tool use, bipedalism, modern behavior.

D. tool use, bipedalism, large brains, modern behavior.

E. bipedalism, modern behavior, large brains, tool use.

Answers

Answer:

The order of development has been large brains, bipedalism, tool use, modern behavior.

Explanation:

A is not correct because the human ancestors had large brains before they become bipedal, which is not weird considering the fact that all primates have proprtionately large brains, even for mammals.

B is correct because the large brains were already a trait of the human ancestors, with the change of environment they developed bipedalism, with the further growth of the brain and anatomic changes in the fingers the humans developed tools, and last but not least came to modern behavior.

C is not correct because bipedalism occurred before the usage of tools.

D is not correct because the tool usage did not occur at the beginning of human evolution, but several million years later.

E is not correct because the bipedalism occurred later than the large brains, and the modern behavior came the last, not in the early stages.

B is the correct answer

Which of the following statements is(are) true?

Question 43 options:

A)

the sociological definition of deviance stresses social context, not individual behavior


B)

the sociological definition of deviance recognizes that not all behaviors are judged similarly by all groups and that some groups have the power to judge behaviors as deviant more than other groups


C)

the sociological definition of deviance recognizes that established rules and norms are socially created, rather than morally decreed or individually imposed


D)

all of the above

Answers

it’s d all of the above

What estimated impact on energy use of food production would the water table in the valley that is pumped for irrigation falls, and water must now be pumped twice the depth to irrigate crops, does it increase or decrease and why?

Answers

Answer:

Irrigated agriculture constitutes the largest consumer of freshwater in the Mediterranean region and provides a major source of income and employment for rural livelihoods. However, increasing droughts and water scarcity have highlighted concerns regarding the environmental sustainability of agriculture in the region. An integrated assessment combining a gridded water balance model with a geodatabase and GIS has been developed and used to assess the water demand and energy footprint of irrigated production in the region. Modelled outputs were linked with crop yield and water resources data to estimate water (m3 kg−1) and energy (CO2 kg−1) productivity and identify vulnerable areas or 'hotspots'. For a selected key crops in the region, irrigation accounts for 61 km3 yr−1 of water abstraction and 1.78 Gt CO2 emissions yr−1, with most emissions from sunflower (73 kg CO2/t) and cotton (60 kg CO2/t) production. Wheat is a major strategic crop in the region and was estimated to have a water productivity of 1000 t Mm−3 and emissions of 31 kg CO2/t. Irrigation modernization would save around 8 km3 of water but would correspondingly increase CO2 emissions by around +135%. Shifting from rain-fed to irrigated production would increase irrigation demand to 166 km3 yr−1 (+137%) whilst CO2 emissions would rise by +270%. The study has major policy implications for understanding the water–energy–food nexus in the region and the trade-offs between strategies to save water, reduce CO2 emissions and/or intensify food production.

What causes a trees leaves to appear green

Answers

Answer:

the chloroplasts in the cells of the leaf

Answer:

Chloroplast

Please mark brainliest

Explain how the structure of an enzyme is related to its function

Answers

Answer:

Found this off of google, "Enzymes. Most enzymes are proteins and therefore their function is specific to their structure. ... The enzyme binds with the appropriate substrate only in the correct alignment and orientation to connect the molecules. The resulting enzyme-substrate complex enables the reaction to occur." Sorry if this was not what you were looking for.

Hope this helps!

Have a great day and weekend, Stay safe!

Happy Halloween! :) :D

A group that contains similar orders

Answers

Answer:

class

Explanation:

White blood cells engulf bacteria through what process?

Answers

Answer:

Phagocytosis

Explanation: Phagocytosis occurs in the scavenging white blood cells of our body. They prowl around looking for invading bacteria and viruses which they engulf and destroy. Pinocytosis ("cell drinking") is almost the same process as phagocytosis, except it involves liquids instead of solids.

What is the fuel of protein?

Answers

Proteins are essential nutrients for the human body. They are one of the building blocks of body tissue and can also serve as a fuel source. As a fuel, proteins provide as much energy density as carbohydrates

Why do roadside plants die frequently after salt trucks salt the roads?
A. Plants lose water to the soil because there is more water there
B. Plants can't take up water in their roots because the solute balance is "off"
C. All of these
D. Plants don't like salt, but take it into the roots anyway

Answers

Answer:

B.

Explanation:

Nature loves balance

due to the salt, and inbalance the plant will die of dehyration, same as people drinking sea water

Plants can't take up water in their roots because the solute balance is "off" so roadside plants die frequently after salt trucks salt the roads

How does plant take up water from soil ?

Osmosis is the process by which water moves into the roots of plants. The amount of salts in the water in the plant and the water in the soil determine how much water moves into the roots.Water may flow back into the soil from the plant roots if the salt level in the soil water is too high. The plant becomes dehydrated as a result, decreasing its yield or even dying.Even though the effects of salinity may not be obvious, crop yield losses may occur. The capacity of a particular crop to extract water from salinized soils determines its salt tolerance.By interfering with nitrogen uptake, reducing growth, and stopping plant reproduction, salinity affects crop, pasture, and tree production.The plant becomes poisoned and dies as the concentration of some ions, like chloride, that are toxic to plants rises.The salinization of rivers that were previously clean is dryland salinity's most significant off-site effect. This has serious financial, social, and environmental repercussions for both urban and rural communities, affecting the quality of water used for drinking and irrigation.The taste of drinking water may be affected by high salt concentrations. Particularly chloride has a low taste threshold. The levels of sodium and magnesium sulfate in drinking water may cause constipation and make it less suitable for grazing animals.

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_______ takes a very long time, sometimes hundreds of years, to change a species. evolution photosynthesis

Answers

Answer:

Evolution

Explanation:

Photosynthesis happens every day


The use of corn to make alcohol is an example of
O refining
O fossil fuels
O bioconversion
O hydrocarbon

Answers

I believe the answer is...

Bioconversion
Bioconversion is the answers thanks

Cellular respiration refers to ...

( WILL Cash app AND MARK BRAINLIEST)
need help ASAP!


a. Releasing cellular energy through secretion

b. The breakdown of sugar molecules in food to release energy

c. Breathing

Answers

Answer:

the brrakdown of sugar

Explanation:

the answer is b

Answer:

b. the breakdown of sugar molecules in food to release energy.

Explanation:

cellular respiration is the opposite of photosynthesis which produces glucose (sugar) and oxygen as a waste product all orgnansim complete cellular respiration by taking in glucose and oxygen and breaking it down to create energy and producing water and carbon dioxide as waste products.

What type of reasoning has occurred when scientists reach a general conclusion from a number of specific observations.

Answers

The answer that you are looking for is a hypothesis

If you buy two plants of the same species that have the same-colored flowers, they must have different genotypes. True or false and why

Answers

Answer:

False

Explanation:

They are displaying the same phenotype. That doesnt mean they have the same genotype.

For example lets say the plants colours are purple (P)

one plant may have the geneotype of PP, (two dominant purple coloured alleles), the other plant may have the genotype Pp, (one dominant purple allele and one recessive allele for another colour lets say pink). Because purple (P) is the dominant allele they are both the same colour displayed but they have different genotypes.

The statement "two plants of the same species that have the same-colored flowers, they must have different genotypes" is definitely true.

What is Species?

Species may be defined as collections of organisms that can significantly reproduce with one another in nature in order to produce fertile offspring. These individuals actually or potentially interbreed in nature. In this sense, a species is the biggest gene pool possible under natural conditions.

When two plants of the same species have the same-colored flowers, it means that they have the same phenotypes. But it does not mean that they possess similar genotypes.

For example, one plant may have the genotype of homozygous dominant (PP), and the other plant may have the genotype heterozygous dominant (Pp). This is both cases the genotypes are different and the phenotypes are the same.

Therefore, the statement "two plants of the same species that have the same-colored flowers, they must have different genotypes" is definitely true.

To learn more about Phenotypes and genotypes, refer to the link:

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What are the three criteria that an object has to meet in order to be considered a planet?

Answers

Answer:

1. Must orbit around a star

2. Must be close to/a sphere shape

3. Must have been proven to finish it's orbit around a star.

Explanation:

These are the main 3 requirements for something to be a planet.

Planets must do three things: Must orbit a star (in our cosmic neighborhood, the Sun). It must be big enough to be gravitationally spherical. Its gravity must have removed similar-sized particles from its orbit around the Sun.

What is a planet?

When gas and dust particles collide and stick together as they orbit a star, planets are created. Because the star's wind blows away their gases and because they are made of heavier materials that are drawn to the star by gravity, the planets closest to the star tend to be rockier.

It states that a planet must fulfill these three requirements: It must follow the orbit of a star (in our cosmic neighborhood, the Sun). It needs to be of sufficient size for there to be sufficient gravity to mold it into a spherical shape. It must be of sufficient size that its gravity drove away any other objects in the vicinity of its orbit around the Sun that were of a comparable size.

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Which organism should have the largest population, and why?

Answers

Answer:

i think it is the cells

Explanation:

what do you think happened to the light from the lightbulb as it passed through the gas cloud before passing through the spectroscopy telescope?

Answers

Answer:

Wrong subject.

Explanation:

Also it sploded.

Does no
light in the deep ocean prohibit life from the deep ocean?

Answers

Lack of light in the depths of the ocean does not mean life does not exist at such depths. Marine biologist have found numerous interesting (and slightly nightmareish) life forms at various depths.

The global human population was growing exponentially up until second and a half of the 20th century according to the ideas of Thomas Malthus because the expansion of gross have continue indefinitely.

Answers

Answer: C

No, because the human population depends on limited resources, and may suffer from war, disease, and famine l.

Who Is Thomas Malthus?

Thomas Robert Malthus was a famous 18th-century British economist known for the population growth philosophies outlined in his 1798 book "An Essay on the Principle of Population." In it, Malthus theorized that populations would continue expanding until growth is stopped or reversed by disease, famine, war, or calamity. He is also known for developing an exponential formula used to forecast population growth, which is currently known as the Malthusian growth model.

KEY TAKEAWAYS

Thomas Malthus was an 18th-century British philosopher and economist noted for the Malthusian growth model, an exponential formula used to project population growth.

The theory states that food production will not be able to keep up with growth in the human population, resulting in disease, famine, war, and calamity.

A noted statistician and proponent of political economy, Malthus founded the Statistical Society of London.

Carbon is different from many other elements in that *
a. it has four electrons in its outermost energy level.
b. it readily bonds with other carbon atoms.
c. it can form single, double, or triple bonds with other atoms.
d. All of the above

Answers

Answer: The answer is D. all of the above

Explanation: The answer is D. because carbon has four valence electrons, so it can achieve a full outer energy level by forming four covalent bonds. A carbon atom can bond with another carbon atom two or three times to make double and triple covalent bonds between two carbon atoms.

Hope this helps!

Hello please help I will give brainliest, Thank you!

Answers

Answer:

its B

Explanation:

cells don't sexually reproduce, they split to form new cells once they have enough nutrients.

The United States Congress has two houses, the Senate and the __________. A. Cabinet B. House of Lords C. House of Commons D. House of Representatives Please select the best answer from the choices provided A B C D

Answers

Answer:

House of  Representatives is the answer

Explanation:

Answer:

House of  Representatives

Explanation:

Which of the following functions does active transport perform in a cell?
Distributing enzymes throughout the cytoplasm
Packaging proteins for export from the cell
Moving substances against the concentration gradient
Equalizing the concentration of water inside and outside the cell

Answers

Answer:

fourth option (D)

Explanation:

Equalizing the concentration of water inside and outside the cell

Active transport has been defined as the movement of ions and molecules at the expense of energy. "They move the substances against the concentration gradient." Thus, option C is correct.

What is active transport?

Active transportation has been defined as the process that moves substances across the plasma membrane of the cell. It uses enzymes and cellular energy to drive the ions and molecules in and out of the cell.

The active transport has been moving the ions from the region low in the electrochemical gradient towards the region that is higher in solute concentration. It moves the substance against the gradient (lower to higher). It uses ATP to move the ions through the protein pump.

Sodium-potassium pump is the best example of the active transport that transports the potassium ions inside the cell and the sodium towards the exterior of the cell. It uses ATP as the fuel that moves ions against the gradient.

Therefore, option C. the active transport moves the ions and molecules from lower to higher solute concentration region.

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what factor will most likely decrease the rate of glucose production ​

Answers

Hello. This question is incomplete. The full question is:

What factor will most likely decrease the rate of glucose production?

A. decreasing in availability of oxygen  B. decreasing in availability of carbon dioxide  C. increase in availability of water  D. decrease in plant-eating organisms

Answer:

B. decreasing in availability of carbon dioxide

Explanation:

According to the answer options, we can say that this question is related to the formation of glucose through photosynthesis, which is the process that uses carbon dioxide and water to generate glucose. In this case, we can confirm that for the photosynthesis process to occur fully and the plant to achieve a large glucose production, a large availability of water and a large availability of carbon dioxide are required.

Therefore, we can conclude that a decrease in the availability of carbon dioxide would decrease the production of glucose.

Where are Nucleic Acids found and why?

Answers

Answer:

Although first discovered within the nucleus of eukaryotic cells, nucleic acids are now known to be found in all life forms including within bacteria, archaea, mitochondria, chloroplasts, and viruses (There is debate as to whether viruses are living or non-living).

Explanation:

i think i dont no

Complete the sentence with the correct transition word.
I like to swim, I prefer not to swim in a lake or in the ocean.
a Since
C. Finally
b. Therefore
d. Even though
Please select the best answer from the cho

Answers

Answer:

D.

Explanation:

I like to swim, even though I prefer not to swim in a lake or in the ocean.

d) even though
i like to swim , even though i prefer not swim in a lake or in the ocean.

Which of these tendencies applies to highly developed countries' use of minerals?

Answers

Answer:

I think the answer is B (they use mineral resources in proportion to their population size.)

Which statement best explains why this extrusive volcanic rock does not have visible crystals?

A. It is homogeneous and composed of a soft mineral.

B. It does not contain atoms of any Earth minerals.

C. It cooled down before large crystals could form.

D. It wasn’t exposed to friction during its formation.

Answers

The answer c. It cooled down before large crystals could form

Answer:

C it cooled before it could harden

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