What is a keystone species? Why are keystone species important to maintaining a balanced ecosystem?

Answers

Answer 1

Answer:keystone species are a species that is extremely important to the ecosystem or something. If keystone species go extinct, it could cause a huge problem for the ecosystem

Explanation:


Related Questions

Mosquitoes can carry and transmit many diseases to humans. In the past, the insecticide DDT was heavily used to reduce mosquito populations in order to reduce instances of disease transmission. However, after some time, mosquito populations developed a resistance to DDT, which made the DDT less effective in reducing mosquito populations.

Based on what you’ve learned about natural selection, in 3–5 sentences, describe how mosquitoes may have come to develop this resistance.

Answers

Answer:

After mosquitoes in a population are exposed to doses of insecticides that are too weak to kill them, mosquitoes may develop resistance to the active ingredient(s). This makes the use of surveillance-based targeted mosquito control of the utmost importance.Explanation:

What does Bandura's Bobo Doll Experiment demonstrate?

Kids are not easily influenced.

Kids don't have preferences for toys when they are around strangers.

Kids are easily influenced by aggressive actions.

Kids get mad when they don't have their way.

Answers

Answer:

Bobo doll experiment, groundbreaking study on aggression led by psychologist Albert Bandura that demonstrated that children are able to learn through the observation of adult behaviour.

Answer:

Option C. is the most accurate.

Which of the following would be the best energy source for developing countries because it is cheap and easy to obtain?

A. Geothermal
B. Nuclear
C. Biomass
D. Coal

Answers

Answer:

Coal

Explanation:

Coal is the most common form of energy, and it only needs to be mined and processed to be useable.

what effect do you think genetic drift would have on the genetic diversity of a population?

Answers

Answer:

Genetic drift can result in the loss of rare alleles and can decrease the size of the gene pool

Answer: Decrease

Explanation: Because the population evolves from a small number of individuals, there will be less genetic variation. In other words, there will be fewer total alleles in the population

Which biological process is represented in the diagram below?
PLS HELP WILL GIVE A LOT OF POINTS

Answers

Answer:

(2) Photosynthesis

Explanation:

The biological process, by which oxygen and food is taken in, ATP is produced by the green plant cell, and carbon dioxide and water is released, is called photosynthesis.

The electron transport system, photosynthetic photosystem, reduction routes, and other components are all included in photosynthesis, which is the most complex physiological process in plants. Thus, option A is correct.

What combine process occur during photosynthesis?

A reaction that is endothermic is photosynthesis. This indicates that without energy, it cannot happen (from the Sun).

The palisade and spongy mesophyll cells of plants include chloroplasts, which contain chlorophyll.

Mineral nutrients that plants need in great numbers include potassium (K) and magnesium (Mg). Both components play a crucial role in photosynthesis and the consequent long-distance transfer of photoassimilates.

Therefore, biological process is represented in the diagram is photosynthesis.

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HELP ASAP WILL GIVE 10 POINTS PLEASEEE two populations of foxes are prevented from mating only because they live on two opposite sides of the Mississippi river this situation is a example of

a geographic isolation
b reproductive isolation
c natural selection
d adaptive radiation

Answers

Answer:

A geographic isolation

Answer:

A: Geographic isolation

- If an insufficient amount of the vitamin in the previous question is present, what condition can it cause?
a. MRSA
b. Herpes
c. Rickets
d. Staph

Answers

Answer:

A

Explanation:

Got it right on study island

Which phrase BEST describes the role of beetles in the decomposition of human remains?

omnivorous feeders
predatory
necrophagous scavengers
semi-aquatic

Answers

Necrophagous Scavengers is the phrase that best describes the role of beetles in the decomposition of human remains.

What do you mean by Decomposers?

Decomposers may be defined as those microorganisms that break down dead organic material partially or completely.

Necrophagous scavengers are the group of decomposers that involves the decomposition of human remains. These organisms feed on the corpse of humans and break down the organic matter.

Therefore, the correct option for this question is C.

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Lab: Exercise and Homeostasis

Answers

A lab report can be defined as a summary of the outcomes of an investigation (in this case homeostasis).

What is the purpose of research?

The purpose of research is to try to answer to a proposed explanation (hypothesis) about a particular issue from the real world.

In this case, our working hypothesis may be associated with the internal state of equilibrium (homeostasis) of organisms.

In conclusion, a lab report is a summary of the outcomes of an investigation (in this case homeostasis).

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PLEASE HELP FAST

Upwellings return nitrates to the surface of the ocean.
True
False

Answers

Answer:

True

Explanation:

I think search it up tho

the answer is true.

The hormone(s) synthesized in the meristematic tissue of the plant shoot and root is/ are
I. abscisic acid
II. auxin
III. cytokinin
A. I only.
B. II only.
C. I and II.
D. II and III.
note: explain why?

Answers

A phytohormone Auxin is synthesized in the meristematic tissue of the plant shoot and root.

What do you mean by Meristematic tissues?

Meristematic tissues may be defined as cells of plants that are competent for dividing indefinitely and giving rise to similar cells or to cells that differentiate to produce the definitive tissues and organs.

Auxin promotes stem elongation. It is synthesized in the area of shoot and root apical meristem that initiates the development of leaves and roots respectively.

Therefore, a phytohormone Auxin is synthesized in the meristematic tissue of the plant shoot and root.

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diagram to show how the parts of the
meadow are related. Fill in each empty box with a description of the living thing or
а
group of living things: for example, one grass plant. Fill in the blanks with the terms
abiotic, biotic, community, ecosystem, organism, and population. You may use some
Cerms more than once.
Passage
A group of students is studying the types of plants that grow in a meadow
next to their school. The meadow is mowed regularly, but it does not get any
water other than rainfall. The meadow has several kinds of plants that are
typically found in a grassland ecosystem. The plants include grass and clover.
But there aren't any trees. The meadow has insects, including ants.
Earthworms live in the soil. Garter snakes and mice also live in the meadow.

Answers

The ecosystem in the meadow consists of the biotic factors such as grass, Garter snakes, and mice, as well as the abiotic factors such as sunlight and water.

What is an ecosystem?

A ecosystem is a self-supporting system consisting of biotic and abiotic factors interacting together to support life.

The biotic factors refers to all living things in that ecosystem such as plants and animals.

The abiotic factors are the non-living components of the ecosystem such as sunlight, water, soil, air, etc.

Therefore, the ecosystem in the meadow consists of the biotic factors and the abiotic factors.

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The cell membrane is made of a ___ ___.

Answers

Cell membranes are composed of proteins and lipids.

Angela, one of your classmates, is concerned about the decline of the Emperor Penguin population and the decline in biodiversity that could occur in the Antarctic peninsula. What part of her ecological footprint can she reduce to most directly help ease her personal impact on these concerns? Use the information in the table to help you answer the Los question. How Human Actions Can Help the Environment Action Effect on Environment Decreasing water usage Ensures that there are adequate water supplies for everyone Recycling Reduces use of landfills; reduces extraction of minerals from Earth's crust; reduces use of other resources Reducing burning of fossil fuels Reduces amount of greenhouse gases in the air; slows global warming and climate change (A) Reduce trash generation by recycling more. (B) Install a more efficient showerhead and faucet to decrease her water usage. (C) Bike to school instead of driving to reduce pollution from fossil fuels. (D) Since humans do not live in Antarctica, our ecological footprints do not affect these penguins.​

Answers

Answer:

c

Explanation:

global warming is serious issue to deal with


The genetic code is based on sequences of three bases called______

Answers

the genetic code is based on sequences of three bases called codons

what is the most likely role of the pores in cell membrane?​

Answers

Answer:

The membrane pores and proteins are responsible for many specialized functions; some act as receptors that allow the cell to respond to external signals, some are responsible for the selective transport of molecules across the membrane, and others participate in electron transport and oxidative phosphorylation.

Explanation:

i hope this helps itll come easier for you eventually

10) A species is considered introduced when its transport into an area outside of its native range is human mediated. Introductions by humans may be either intentional or accidental. In the U.S. many
economically important species have successfully been introduced and managed: they have not become invasive species. Identify the statement that is NOT CORRECT regarding the positive effects
of
introduced species
A) All Livestock species except the American bison and the turkey are introduced species to North America.
B) Thomas Austin, a British landowner had rabbits released on his estate in Victoria, Australia because he missed hunting them.
Eliminate
Species, such as the wolf, are reintroduced because it has become locally endangered or extinct and this is done in the interest of conservation
D) Many plants, such as the Norway maple and the Japanese maple, have been introduced with the intent of aesthetically improving public recreation areas of private
properties

Answers

Answer:

The introduction of new species in the new area make the specie invasive if there is no predator is present in that ecosystem because the predator helps in the controlling of the population of that invasive species. The big example of invasive species is rabbit in the Australia where rabbit become invasive when there is no predator is present in that region so they increase in population and destroy all vegetation of that region. So if there is no predator of a newly introduced species, it become invasive in future.

Explanation:

art B: Analyze and Extend
Question 1
Does your MyPlate Plan match your actual food intake? Explain your
в | px? Х,
15px
A2
Characters used: 0 / 15000

Answers

Based on the information, the MyPlate plan correctly matches with my food intake (consumption).

What is MyPlate?

MyPlate can be defined as an online resource (website) that is designed and developed to provide recipes, cookbooks, dietary guidelines, and healthy eating habits for people, over a specific period of time.

According to MyPlate guidelines, the following dietary guidelines are to be adopted:

Grains should make up about one-fourth (¼) of a diet.Fruits should make up less than one-fourth (¼) of a diet.Protein should make up about one fourth (¼) of a diet. Vegetables should make up more than one-fourth (¼) of a diet.

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Which type of hormones act on other endocrine glands to stimulate secretion of hormones produced by the target gland?.

Answers

Answer:

ACTH, gonadotropins, and TSH

Explanation:

ACTH stimulates the adrenal cortex to produce corticosteroid hormone

What do you think matter is used for

Answer-

Answers

Explanation:

Thank you so much don't forget to follow

and thanks for the points

What devices are used by operators to block out scattered radiation?
A) Lead barriers/shields
B) Digital subtraction devices
C) Intensifying screens
D) Paralleling harrior

Answers

Answer:

A

Explanation:

Are bacteria and viruses types of diseases?​

Answers

Answer:

Technically, no. But note that these can both cause diseases.

How are the light-capturing reactions and the calvin cycle interdependent on each other?.

Answers

Answer:

The Calvin cycle requires the ATP and NADPH produced in the light-capturing reactions, while the inputs to the light-capturing reactions are regenerated by the Calvin cycle.

Explanation:

This process is fueled by, and dependent on, ATP and NADPH from the light reactions. Unlike the light reactions, which take place in the thylakoid membrane, the reactions of the Calvin cycle take place in the stroma (the inner space of chloroplasts).

Who was the first to model the sun as the center of our universe, or the heliocentric theory?

Question 2 options:

Kepler


Copernicus


Ptolemy


Brahe

Answers

Answer:

Copernicus

Explanation:

Answer:

The answer is Copernicus.

Explanation:

Nicolaus Copernicus was a Renaissance polymath, active as a mathematician, astronomer, and Catholic canon, who formulated a model of the universe that placed the Sun rather than Earth at its center. In all likelihood, Copernicus developed his model independently of Aristarchus of Samos, an ancient Greek astronomer who had formulated such a model some eighteen centuries earlier.

Ecosystems are dynamic; they are always changing, and most changes occur naturally over time. However, natural disasters and human activities may dramatically alter an ecosystem.

A. True

B. False

Answers

Answer:true

Explanation:

its true bc humans cause lots of damage to ecosystems whether its littering or simply making certain animals extinct

Which of these are components of blood? (Select all that apply.)
oxygen gas
red blood cells
bile
platelets

Answers

Answer:

oxygen gas

red blood cells

platelets

Explanation:

» Concepts

Your blood is composed of four main things: red blood cells (that transport oxygen), white blood cells, platelets, and plasma. Red blood cells transports oxygen and takes out CO2, white blood cells fight bacteria and viruses, and platelets clot together to stop bleeding.

Bile is a fluid that is produced by the liver and stored in the gallbladder, so it's not a main component of blood.

red blood cells , bile and platelets

Increasing and improving aquaculture will:
A) pollute Earth's oceans.
B)improve food security by providing a more resource-efficient protein source.
C) release large amounts of carbon dioxide into the atmosphere.
D) increase nutrients in fruits and vegetables.

Answers

release large amounts of carbon dioxide into the atmosphere.

The feather from which bird was most commonly used to make quill pens?.

Answers

Answer:

Goose feathers

Explanation:

Goose feathers were the principal source of quills. Quill pens were traditionally made from goose feathers with the consensus being that they were stronger and larger than other birds.

I hope this helps!

is salmon and shark are the same

Answers

Answer:

No they are not the same...

Explanation:

Answer:

They are not the same

Explanation:

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How is urine formed starting with the blood

Answers

Answer:

As blood flows through the glomerulus, blood pressure pushes water and solutes from the capillaries into the capsule through a filtration membrane. This glomerular filtration begins the urine formation process.

Explanation:

Hope this helps

Answer:

As blood flows through the glomerulus, blood pressure pushes water and solutes from the capillaries into the capsule through a filtration membrane

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