what is the role of the beaver in its ecosystems?
a) it is a foundation species and the main source of food for the natural predators of its ecosystems.
b) it is a keystone species that modifies its natural environment by damming streams to form wetlands
c) it is a dominant species, as it has the greatest number of individuals among all the mammalian species of its ecosystem
d) it is an endangered species as it has the least number of individuals among all the mammalian species of its ecosystem

Answers

Answer 1

Answer:

B)

Explanation:


Related Questions

1. Who was Alfred Wegener?

Answers

Wegener was a German meteorologist, geophysicist and polar researcher. In 1915 he published 'The Origin of Continents and Oceans', which outlined his theory of Continental Drift.

Is a mountain building explained by plate tectonics

Answers

Answer:

Yes. So are earthquakes and volcanoes.

Explanation:

Answer: No, I don't think so.

Explanation:

what is the only bone in the body not connected by muscle or ligament

Answers

Answer:

The hyoid bone is the only bone in humans that does not articulate with any other bone, but only has muscular, ligamentous, and cartilaginous attachments.

Explanation:

brief summary of conservation of forests & wildlife

least 10 page

Answers

With the advent of industrialization, several trees have been cut at an alarming rate for raw materials and various other purposes. This felling of trees can be regulated by selective cutting, clear-cutting and shelterwood cutting.

Forest fires are one of the common causes of loss of forests. Sometimes the forest land is set on fire to make the land available for commercial purposes. Once cleared, there can be no vegetation. Natural forest fires are also responsible for the destruction of huge forest covers. Latest fire fighting techniques should be adopted to conserve the forest. However, forest fires are an important part of the ecosystem and it helps replenish nutrients in the soil from dead and decaying matter.

More trees should be planted to increase the forest cover. Trees should be selected according to the geographical conditions of a particular region and proper care should be taken during the growth of trees.

Prevention of exploitation of forestry and forest products is necessary for the conservation of forest.

The existing forests should be protected from diseases by spraying chemicals, antibiotics or development of pest-resistant strains of trees.

Which substance acts as a buffer in natural water?
O A. A pH indicator
O B. Distilled water
O c. Decaying plant matter
O D. Sulfuric acid

Answers

Answer:

i think Decaying plant matter is answer

When was a control used in the investigation of the amphipods and sea butterflies? Why was a control necessary?​

Answers

pteropods or sea snails, also called sea angels, produce chemical deterrents to ward off predators, and some species of amphipods take advantage of this by carrying pteropods piggyback to gain protection from their voracious predators.

Why was progress in science interrupted during the dark ages? The Roman Empire fell in the 5th century thus advancements in science came to a halt. As science halted in Europe, where else did it advance? Science advanced in other areas of the world like China, Polynesia, and Arab nations.

Define gamete and zygote. What number of chromosomes does each have?

Answers

Answer:

gamete: a mature haploid male or female germ cell which is able to unite with another of the opposite sex in sexual reproduction to form a zygote. zygote:a diploid cell resulting from the fusion of two haploid gametes. zygote has 46 chromosomes, gamete has 23

Explanation:

which statements accurately reflect the permeability of the cell membrane? choose all that apply

Answers

Answer:

The hydrophilic part of the cell membrane is A, the phosphate head.

Charged molecules, such as K+ or Ca++ are unable to pass through the lipid bilayer because of their charge and must use a membrane protein to cross the cell membrane.

C, the lipid tails, are hydrophobic and repel water.

Explanation:

What will happen if your body can't make saliva and bile?

Answers

Answer:

Bile helps with digestion. It breaks down fats into fatty acids, which can be taken into the body by the digestive tract. Bile contains: Mostly cholesterol

What is the 11 year solar cycle?

Answers

The Sun's magnetic field goes through a cycle, called the solar cycle. Every 11 years or so, the Sun's magnetic field completely flips. This means that the Sun's north and south poles switch places. Then it takes about another 11 years for the Sun's north and south poles to flip back again.

hope this helps!

the part of the cell that is hydrophobic (water-fearing) is the? __________
A, Whole cell membrane.
B, Fatty-acid tail.
C, Phosphate head.
D, None of the above.
PLEASE HELP BY TODAY!

Answers

Answer: B  Fatty-acid tail

Explanation:

I have attached an image of what the cell membrane looks like, there's something called a phospholipid which makes up the membrane of the cell and as you can see, the head of the phospholipid is faced outwards while the hydrophobic tail is safe on the inside. The inside and outside of the cell has a lot of liquid and water so the hydrophobic (water fearing) part of the phospholipid (the tail) had to be protected and facing inwards away from it! Hope this helps, I'm in AP Biology right now :)

Which of the following statements is correct about pollination? ​

Answers

Answer:

B should be correct

Explanation:

Pollen from an anther drops or rubs off on a pollinater. The pollinator then moves/takes it to another flower and it goes on the stigma of a flower.

Answer:B) Cleistogamous flowers are always autogamous

During the citric acid cycle, some carbon atoms are released.

What are these carbon atoms released as?
A. FADH2
B. Acetyl-CoA
C. CO2
D. ATP

Answers

Answer:

B. Acetyl-CoA

Explanation:

Acetyl CoA are released as carbon dioxide, one of the major products of cellular respiration, through a series of enzymatic reactions.

What are some ways people in Everglades are getting rid of Burmese Pythons?

Answers

Answer:gas

Explanation:when i learned about this we used gas bombs to rat them out and poisin them

how would deforestation affect the level of carbon in the atmosphere ? explain using scientific reasoning

Answers

When forests are cut down, much of that stored carbon is released into the atmosphere again as CO2.

What enzyme is used in the production of low calorie food and why is it used? No links please x

Answers

The enzyme used is Isomaltulose and it used as an alternative to sugar.

pls help

match the nutritient molecules with their breakdown products


amino acids

glucose

triglycerides



carbohydrates

fats

proteins



plato

Answers

Amino acids- proteins
Glucose- carbohydrates
Triglycerides- fats

how does carbon moves through the system in the dark?

Answers

Answer:

Generally, about half of the caught carbon is released in respiration. ... When it is dark, the only flow of CO2 comes from respiration.

Explanation:

I will give 50 points PLEASE HURRY
Click the links to open the resources below. These resources will help you complete the assignment. Once you have created your file(s) and are ready to upload your assignment, click the Add Files button below and select each file from your desktop or network folder. Upload each file separately.

Answers

Answer:

thats only 5.

Explanation:

Which of the following describes the changes that occur during the 3rd week of the menstruation cycle? A. The egg matures within the ovary. B. The egg travels through the fallopian tube to the uterus. C. The unfertilized egg is removed from the uterus. D. Egg travels from the ovary into the fallopian tube. Please select the best answer from the choices provided. A B C D.

Answers

The changes that occur during the 3rd week of the menstruation cycle is

the egg travels through the fallopian tube to the uterus.

Ovulation is the process that takes place during the 3rd week of

menstruation. The Luteinizing hormone (LH) stimulates the release of the

egg from the ovary and travels through the fallopian tube to the uterus.

At this stage, the individual has a higher chance of getting pregnant when

unprotected sex occurs.

Read more on https://brainly.com/question/13349245

If a star is moving toward Earth, it is
O A. blue shifted
O B. shrinking
O C. red shifted
O D. expanding

Answers

Answer:

If a star is moving toward Earth, it is blue-shifted.

Explanation:

please mark my answer in brainlist

In three to five sentences, describe the advantages and disadvantages of these maps in modeling mitosis.

Answers

In biology, a model can be regarded as representation of the structure and function of biological molecules or maybe an event.

The advantages and disadvantages of these maps in modeling mitosis includes

They depicted the Interphase stages comprising of the G1, S and G2 phases.They also listed  the phases involved in mitosis which is also goodThe other image is depicting mitosis too but there is no title and labeling to it which might be confusing.The models should be able to depict the various activities that occurs during mitosis meaning the second model should have contained labeling to indicate the process of mitosis.The first model should have contained pictorial representations to enable better understanding.

Learn more about models in biology: https://brainly.com/question/2289444

Answer:

The disadvantages for both cells are that neither is an accurate representation of the cell themselves, or the processes. The first cell doesn't tell us exactly what phases the cell is currently going through, and the cell doesn't go through is phases through grey arrows either. However, it does tell us what the phases look like, and the process of how the cell goes through them. The disadvantages of the second map is that, it doesn't show what the phases look like, the advantages are that tells us what the phases are and what comes before and after them, while showing how this occurs in a cycle and keeps going until senescense.

Explanation: Please give me Brainliest! Thank you!

Page 7e) Mrs. karki deposited a sum of money 7aa in a bank at the rate of 5 90 per year Simple interest. T. She received an interest of Rs 4,740 at the end of years how 6 did she deposit in the bank? much money​

Answers

The principal money Mrs Karki deposited in the bank was

= Rs 1339

Simple interest (Si) received = Rs 4,740

Time (t)= 6 years

Rate (r)= 59%

Therefore the principal amount (p) =

[tex]p = \frac{si \times 100}{r \times t} [/tex]

where,

[tex]p = \frac{4740 \times 100}{59 \times 6} [/tex]

[tex]p = \frac{474000}{354} [/tex]

[tex]p = 1339[/tex]

Therefore, the principal money Mrs Karki deposited in the bank was = Rs 1339

Learn more about simple interest here:

https://brainly.com/question/25793394

The principal money Mrs Karki deposited in the bank was

= Rs 1339

Simple interest (Si) received = Rs 4,740

Time (t)= 6 years

Rate (r)= 59%

Therefore the principal amount (p) =

[tex]p = \frac{si \times 100}{r \times t} [/tex]

where,

[tex]p = \frac{4740 \times 100}{59 \times 6} [/tex]

[tex]p = \frac{474000}{354} [/tex]

[tex]p = 1339[/tex]

Therefore, the principal money Mrs Karki deposited in the bank was = Rs 1339

Learn more about simple interest here:

https://brainly.com/question/25793394

Why stochiometric important in industry of chemical substance

Answers

Answer:

Stoichiometry is used in industry quite often to determine the amount of materials required to produce the desired amount of products in a given useful equation

The discovery that syphilis led to paralysis and to delusions of grandeur supported the _____ perspective.

Answers

The discovery that syphilis led to paralysis and to delusions of grandeur

supported the somatogenic perspective.

What is Somatogenic perspective?

Somatogenic perspective is defined as personality disorder which arise as a

result in changes in the physiological or biochemical aspect of the body. The

personality trait is delusions of grandeur which is when an individual thinks

he has more power or other traits than normal.

Relationship between Syphilis and delusion of grandeur

Delusion of grandeur is common in people with Syphilis and can be

classified as being under personality disorder which is why Somatogenic is

the most appropriate choice.

Read more about Somatogenic here https://brainly.com/question/4511566

the lysosomal enzymes show optimal activity in ------------ph.

Answers

the lysosomal enzymes show optimal activity in White blood cells

proteins are responsibe for

A.) insulating the body
B.) Maintaining the structure of cells and tissue
C.) Storing energy from unused glucose molecules
D.) Holding the blueprints that code for all the cell's activities

Answers

Answer:

B.

Explanation:

Answer:

its a.

Explanation:

im learned protiens in biology like 4 weeks ago.

PLEASE HELP ILL GIVE BRAINLIEST

Review

1. Describe the structures of the chloroplast where photosynthesis takes place.

2. What would happen if the stomata of a plant leaf were glued shut? Would that plant
be able to perform photosynthesis? Why or why not?

3. What are the reactants needed to perform photosynthesis? The products?

4. What happens to the products of photosynthesis?

Answers

Answer:

In plants, the process of photosynthesis takes place in the mesophyll of the leaves, inside the chloroplasts. Chloroplasts contain disc-shaped structures called thylakoids, which contain the pigment chlorophyll. Chlorophyll absorbs certain portions of the visible spectrum and captures energy from sunlight.

The plant leaf would not be able to perform photosynthesis. The leaf needs to have its chloroplasts facing the sun, so that they can absorb the sunlight to perform photosynthesis.

During photosynthesis, light energy converts carbon dioxide and water (the reactants) into glucose and oxygen (the products).

During the process of photosynthesis plants break apart the reactants of carbon dioxide and water and recombine them to produce oxygen (O2) and a form of sugar called glucose (C6H12O6). The oxygen will leave the plant through the stomata and enter Earth's atmosphere.Explanation:

A form of asexual reproduction in bacteria and other prokaryotes that involves the splitting of a parent cell into two independent cells is
called binary fission

True
False

Answers

i think the answer is true but im not for sure

where does all the carbon in organisms originate from?

Answers

Answer:

plants from the earth's atmosphere.

Explanation:

Plants fix carbon in the form of carbon dioxide during photosynthesis. Then, any animal that comes along and eats the plant gets the carbon too.

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