What is the name of a species that is highly connected to the entire food web and whose loss may result in ecosystem collapse

Answers

Answer 1
There are three types of keystone species cited by many scientists: predators, ecosystem engineers, and mutualists. Predators help control the populations of prey species, which in turn affects the quantity of plants and animals further along the food web.

Related Questions

removing seeds from cotton plants was a slow job until eli whitney invented the cotton gin what is cotton gin

Answers

a mechanic invented by eli whitney that removes seeds from cotton much more more quickly and effectively than by hand.

Question 2 of 10 which structure is most likely used for motion?

Answers

i would say B because when the whale slaps his tail, it moves.

Answer:

pretty sure it would be B

Explanation:

Thats the only thing that could possibly be used for moving around. hope this helps you

Svetlana and her mother are very similar. Both have blonde hair, a love of scrapbooking, blue eyes, and a thin nose. Which statement most likely describes Svetlana’s traits? Svetlana inherited her love of scrapbooking from her mother, but her blue eyes come from her environment. Svetlana inherited her blue eyes from her mother, but her love of scrapbooking comes from her environment. Svetlana inherited her thin nose from her mother, but her blonde hair comes from her environment. Svetlana inherited her blonde hair from her mother, but her thin nose comes from her environment.

Answers

Answer:

It's probably B, Svetlana inherited her blue eyes from her mother, but her love of scrapbooking comes from her environment.

Explanation:

Again I'm not sure but this should be it.

:)

Hope this helps!

Answer:

B) Svetlana inherited her blue eyes from her mother, but her love for scrapbooking comes from her environment.

Explanation:

Edge Unit Test Review 2022. Got it correct from the person above. Thank them, my answer is just here so others aren’t misled.

How are elements related to the Earth's crust?

Answers

The Earth's crust comprises about 95% igneous and metamorphic rocks, 4% shale, 0.75% sandstone, and 0.25% limestone. Oxygen, silicon, aluminum, and iron account for 88.1% of the mass of the Earth's crust, while another 90 elements make up the remaining 11.9%.

both carbohydrates and fats provide erorgy, why is it that you get a sugar high,
ut not a fat high?

Answers

Answer: The body uses three main nutrients to function --- carbohydrate, protein, and fat. These nutrients are digested into simpler compounds. Carbohydrates are used for energy (glucose). Fats are used for energy after they are broken into fatty acids. Protein can also be used for energy, but the first job is to help with making hormones, muscle, and other proteins.

Cells in the pancreas can release glucagon, a hormone that signals the body to produce glucose from glycogen in the muscles and liver and release it into the blood.When glycogen is used up, muscle protein is broken down into amino acids. The liver uses amino acids to create glucose through biochemical reactions.Fat stores can be used for energy, forming ketones.Other hormones can raise the blood sugar level, including epinephrine (also called adrenaline) and cortisol released by the adrenal glands and growth hormone released by the pituitary gland.

sorry if im wrong and have a wonderful day kind person!!!!!!

Which statements are true about the phosphorus cycle? Select all correct answers.

A) Phosphate flows from the atmosphere to the geosphere.

B) Phosphorus is stored in only abiotic reservoirs.

C) Weathering releases phosphate from rocks.

D) Phosphate is taken up by producers in aquatic ecosystems.

Answers

Answer:

B) Phosphorus is stored in only abiotic reservoirs.

Explanation:

The true statement about the phosphorus cycle is " Phosphorus is stored in only abiotic reservoirs".

What is the phosphorus cycle?

The biogeochemical cycle known as the "phosphorus cycle" illustrates how phosphorus is changed and moved around in the soil, water, and both living as well as dead organic matter.

What are abiotic reservoirs?

Abiotic storage space is a region of an ecosystem during which a chemical, like carbon or nitrogen, builds up or is stored away from living things.

The true statement about the phosphorus cycle is " Phosphorus is stored in only abiotic reservoirs".

Therefore, the correct statement is an option (B)

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Why does one strand of DNA need to be copied in short fragments?

Answers

Why does one strand of DNA need to be copied in short fragments?

Because the two strands of a DNA molecule have complementary base pairs

#Carry_On_Learning

Because DNA polymerase can only synthesize DNA in a 5′ to 3′ direction, the other new strand is put together in short pieces called Okazaki fragments. The Okazaki fragments each require a primer made of RNA to start the synthesis. The strand with the Okazaki fragments is known as the lagging strand.

Hope this helps

Check the three factors that influence population growth. A. Increasing Longevity B. International Migration C. Fertility Rates D. Social media use E. Water supply.

Answers

Population growth is the increase in the population number of a given species in a time. Longevity, migration and fertility rates affect population growth.

What are the factors affecting population growth?

Increased Longevity has impacted the population growth as the life expectancy has resulted in the accumulation of more people as their age of living has increased.

International Migration can affect the population growth positively and negatively as moving of the person from one region will decrease its population growth while the region where they go will have increased population.

Fertility Rates has a great impact on the population as the fertility rate had decreased due to many factors and the population has declined.

Therefore, option A. longevity option B. migration and option C. fertility rates influence the population growth.

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Which organelle do alga need in order to conduct photosynthesis?.

Answers

Answer:

sunshine is needed to carry out photosynthesis

When a piece of liver is dropped into hydrogen peroxide, the peroxide bubbles vigorously as the hydrogen peroxide (H2O2) decomposes. However, if the liver is cooked first, the reaction fails to occur. The reason for this is

a. heating kills the germs that cause the bubbling

b. heating damages the enzyme in liver that breaks down hydrogen peroxide

c. heating removes the water and oxygen from the liver

d. reactions take place faster at lower temperatures

Answers

Based on the nature of enzymes, heating damages the enzyme in liver that breaks down hydrogen peroxide

What are enzymes?

Enzymes are organic molecules which catalyze biological reactions.

Some properties of enzymes include:

most enzymes are proteinsthey are denatured by heatEnzymes are specific in their action

When the liver is cooked, the enzymes present in the liver that decompose the hydrogen peroxide is denatured.

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Viruses come in what kind of shapes and
sizes?
A. only square or rectangular
B. only cube or prism
C. many different
D. always spherical

Answers

the answer should be C. many different

Answer:

c

Explanation:

if i'm wrong blame me

Pls help with science

Answers

Answer:

number 10 - the plants are the same because you need to have them that way, so it doesn't change anything about the experiment

Explanation what might happen to one plant

might not happen to the other

A small mass of nervous tissue, consisting primarily of neuron cell bodies, outside of the brain and spinal cord is a.

Answers

The correct answer is ganglia

What do the letters outside the punnett square represent.

Answers

Answer:

the letters outside of a punnett square represent the parents genes

in the taiga biome, one of the major human impacts has been_____

A-fire prevention

B-Deforestation

C-water pollution

D-oil drilling

Answers

Answer:

The Answer is B: Deforestation

Explanation:

Current extensive logging in boreal forests may soon cause their disappearance.

can someone explain the answer plz​

Answers

Answer:

your ans is option A.

Explanation:

here stem cells are diploid (2n)

and pollen grains are male gametes so they are haploid (n) so thats why the correct and is 21

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what percentage of the water entering the small intesneine is not absorbed during the digestive process

Answers

Almost all ingested food, 80 percent of electrolytes, and 90 percent of water are absorbed in the small intestine. Although the entire small intestine is involved in the absorption of water and lipids, most absorption of carbohydrates and proteins occurs in the jejunum.

The 10% of the water entering the small intestine is not absorbed during the digestive process.

What is the Digestive process?

The digestive process may be defined as a type of process that significantly deals with the organs that take in food and liquids and ultimately break them down into simpler substances so that the body can utilize them for energy production, growth, and tissue repair.

It may be thought that 90% of the water entering the small intestine is absorbed during the digestive process. This percentage of absorbed water constitutes either liquid or solid food. Apart from this, 95% of the carbohydrates and protein you consume are absorbed in the small intestine during the same process.

Therefore, 10% of the water entering the small intestine is not absorbed during the digestive process.

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Driving while sleep impaired is much safer than driving while intoxicated. Please select the best answer from the choices provided T F.

Answers

Answer:

false but both are unsafe

Explanation:

Driving while sleep-impaired is not safer than driving while intoxicated. In fact, it is just as dangerous, if not more so. Hence the statement is false.

Driving while sleep-impaired is a serious problem that can lead to accidents, injuries, and even death. When you are sleep-impaired, your reaction time is slowed, your judgment is impaired, and your coordination is decreased. These factors can all contribute to dangerous driving behaviors.

A study by the National Highway Traffic Safety Administration (NHTSA) found that drivers who are sleep-deprived are 7 times more likely to be involved in a fatal crash than drivers who are well-rested.

The study also found that drivers who are sleep-deprived are more likely to make mistakes, such as drifting out of their lane or failing to yield the right of way.

Therefore, the statement "Driving while sleep impaired is much safer than driving while intoxicated" is false.

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List the steps on how seedless plants grow compared to seed plants.

Answers

The difference between seed plants and seedless plants is that seedless plants do not bear seeds for propagation, whereas seed plants bear seeds for multiplication. The plant kingdom is traditionally divided into four main divisions, i.e Thallophyta, Bryophyta, Pteridophyta and Spermatophyta.

Who designed the labyrinth of king minos in greek mythology?.

Answers

Answer:

Daedalus, (Greek: “Skillfully Wrought”) mythical Greek inventor, architect, and sculptor who was said to have built, among other things, the paradigmatic Labyrinth for King Minos of Crete. Icarus and Daedalus, etching by Giovanni David, 1775; in the Metropolitan Museum of Art, New York City.

________ slow down transpiration by _________ the stomata Question 8 options: Guard cells; closing Chloroplasts; closing Guard cells; opening Chloroplasts; opening.

Answers

Transpiration is the rate of the water vapour exhalation by the plant cells through its opening pores. The correct blanks are guard cells and closing.

What is the structure of plant cells regulating transpiration?

Plant cells have certain specialized cell organelles that help in maintaining the rate of the carbon dioxide and the water content in their cells.

Stomata of the plant cells are specialized organelles that maintain the water and rate of transpiration by the plants.  They have guard cells surrounding them that regulates their opening and closing.

The guard cells of the stomata form pores of the stomatal opening. The opening and the closing of the pores are regulated by the bulge and the carbon and the water intake and outtake of the cell is maintained.

Therefore, option A. guard cells and closing are the correct blanks.

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Help me right know!!!! How are dolphins affected by the moon or seasons?

Answers

Answer:

For dolphins that foraged at night, the presence of echolocation was reduced during nights of the full moon and during times of night that the moon was present in the night sky.

Explanation:

Suggest why micro-organisms can grow and divide very quickly if they get into blood?

Answers

Answer:

Micro-organisms can grow and divide very quickly if they get into blood as the blood provides them food for growth and reproduction

Explanation:

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A small portion of the fetal part of the placenta is removed to prepare a karyotype in the process called ______.

Answers

Answer: chorionic villus sampling

Explanation:

CVS: A thin tube that is guided through the cervix. Is a type of prenatal diagnostic test to detect chromosomal problems that can result in genetic diseases and birth defects.

discuss why too much respect for the feelings of those involved in conflict may hamper your attempt to effectively resolve it​

Answers

We can say that too much respect for the feelings of those involved in a conflict may hamper your attempt to effectively resolve it​ because it generates bias.

What is bias?

Bias is the inclination to side with one individual or group over another. This can be the case in the situation described as one might have too much respect for the feelings of those involved in a conflict and thus feel identified by them, causing a bias that affects your ability to make neutral decisions that can benefit all parties involved.

Therefore, we can confirm that too much respect for the feelings of those involved in a conflict may hamper your attempt to effectively resolve it​ because it generates bias.

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Too much respect for the feelings of those involved in conflict may ultimately prevent such a resolver of conflicts from taking a pragmatic approach when handling the matter thereby stalling the process of conflict resolution.

What is a conflict?

A conflict is a disagreement between two or more parties over a common interest. Management of conflict is a very critical skill required in administration.

Many times, a person involved in resolution of conflicts may seek not to offend the feeling's of any of the parties involved in the conflict. This will ultimately prevent such a resolver of conflicts from taking a pragmatic approach when handling the matter thereby stalling the process of conflict resolution.

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Which form of transport requires the expenditure of energy?.

Answers

active transport
During active transport, substances move against the concentration gradient, from an area of low concentration to an area of high concentration. This process is “active” because it requires the use of energy (usually in the form of ATP). It is the opposite of passive transport.

Which of the following is formed when minerals and extreme heat and pressure are combined?

Answers

Answer:

Metamorphic rocks

Explanation:

Secretory proteins are:____.
a. produced by ribosomes on the smooth endoplasmic reticulum.
b. chemically modified in the nucleus.
c. produced by the cell for internal use.
d. released from the cell through the plasma membrane.

Answers

The correct answer is Secretory proteins are produced by ribosomes on the smooth endoplasmic reticulum.

What are secretory proteins?

Secretory proteins include both endocrine and exocrine proteins that are secreted by cells. Secretory proteins are found in a wide variety of hormones, enzymes, toxins, and antimicrobial peptides. Protein secretory molecules are created by the endoplasmic reticulum.

An average of 3-5 amino acids are produced by ribosomes at the cytosolic face of the ER in mammalian cells every second.

The intestinal epithelium is composed of the enteroendocrine, Paneth, goblet, and absorptive enterocyte cell lineages as well as three other types of secretory cells. The fifth and least typical type of intestinal cell is called a tut cell.

Hence, the correct answer is Secretory proteins are produced by ribosomes on the smooth endoplasmic reticulum.

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Explain how the same four nitrogen bases contribute to the variation seen between you and other humans.

Answers

Answer:.nitrates

            .ammonia

             .proteins

             . ammonium salts

Explanation: the variations of the nitrogen bases are: [tex]NO3[/tex] (nitrate), which is found in the plant nodules that we feed on,

.Ammonia, which is excreted by us through urines, which also contains nitrogen, which when absorbed into the soil, form ammonium salts

.proteins, that we get when we feed on nitrogenous foods, which when we die they get decomposed into nitrates and ammonia.

.ammonium salts, teat are changed by the nitrifying bacterias into nitrogen gas which returns back in the atmosphere

.

The four nitrogen bases contribute to the variation between humans because the order of nucleotides determines phenotypic features associated with genetic inheritance.

In DNA, there are four types of nucleotides, each containing one different nitrogen base.

The four nitrogen bases in DNA nucleotides are Adenine, Guanine, Cytosine, and Thymine.

The linear order of these nucleotides in genes largely determines the phenotypic features associated with genetic inheritance.

In conclusion, the four nitrogen bases contribute to the variation between humans because the order of nucleotides determines phenotypic features associated with genetic inheritance.

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Match each event with its description.


1. Lunar eclipse
2. New moon
3. Solar eclipse
4. Full moon



1. The moon is fully visible to observers on earth
2. The moon lies between earth and the sun, but does not block light from reaching earth
3. Earth blocks sunlight from reaching the moon
4. The moon blocks sunlight from reaching earth

Answers

1. full moon
2.new moon
3.lunar eclipse
4. solar eclipse
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