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lara31 [8.8K]
3 years ago
5

If a population size begins to_______rapidly, this can be a signal that extinction is coming.

Biology
1 answer:
Yakvenalex [24]3 years ago
4 0

Answer:

decreases

Explanation:

any decrease in the population can lead to a signal of extinction

any increase is result of rapid growth

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A wolf's diploid number of chromosomes is 78. How would the number of chromosomes in the wolf's body cells compare to the number
dimulka [17.4K]

Answer: The number of chromosomes in the wolf's body cells is 78 while the gametes has 39

Explanation:

Since each body cell under only mitosis to yield two daughter cells with equal number of chromosome as the parent cell (i.e diploid number, 2n) while sex cells undergo meiosis to yield four daughter cells with half the number of chromosomes as the parent cell (i.e haploid number, n); thus, the wolf's body cells has 78 chromosomes while the gametes has 39 chromosomes.

7 0
3 years ago
The right ventricle transports oxygenated blood to the lungs true or false
adell [148]

I believe the correct answer is FALSE.

<h2>Explanation:</h2>

The heart is an organ located at the center of the chest in the thoracic cavity and functions to supply blood to and from tissues giving the tissues oxygen and nutrients while taking away carbon dioxide and waste products. It is divided into 4 chambers and 2 chambers are separated by a muscular wall that prevents mixing of the blood.

<h2>Further Explanation:</h2>

Blood enters the heart via the vena cava which is divided into the superior vena cava that recieves blood from the upper region of the body that includes the head, neck and chest while the inferior vena cava recieves blood from the lower extremeties that includes the legs, the abdomen, the pelvic region and the thighs. The blood is deposited into the right atrium and is de-oxygenated. When it is deposited into the right atrium, the change in volume of the atrium and the expansion causes the valve to open and allow the de-oxygenated blood to flow into the right ventricle. The right ventricle then pumps the blood that is de-oxygenated to the lungs via the pulmonary artery which is the only artery that pumps de-oxygenated blood. In the lungs, carbon dioxide is removed and oxygen added to the blood and is taken to the left atrium which pumps the oxygenated blood to the left ventricle and then the left ventricle pumps the oxygenated blood to the rest of the body. The blood is then again taken through the body via the capillaries and the veins pick up the blood that has been removed of oxygen and added with carbon dioxide and transport the blood back to the heart via the vena cava. It enters the right atrium via both the inferior and superior vena cava and the de-oxygenated blood is circulated again to the lungs for oxygenation from the left ventricle.

<h2>Learn More:</h2>

Learn More about types of circulation: brainly.com/question/1615925

Learn more about the heart: brainly.com/question/12945500

Learn more about the circulatory system: brainly.com/question/919984

Level: High School

Subject: Biology

Topic: The Circulatory System

6 0
3 years ago
Read 2 more answers
The illustration shows biotic and abiotic factors in a pond ecosystem. Which are biotic factors of the pond ecosystem?
Hatshy [7]

Answer:

All organisms that have life, both plants and animals.

Explanation:

You didn't provide an illustration, but I guess I can still help. Biotic factor means that it has life, abiotic means it's not alive (hence the a- at the beginning.) Some biotic factors of a pond ecosystem include: earthworms, fishes, frogs, plants and insects.

5 0
3 years ago
A snake is about to eat some small eggs it has found in a bird's nest. A hawk swoops down and eats the snake. What is the role o
vlada-n [284]
Hello there,

<span>A snake is about to eat some small eggs it has found in a bird's nest. A hawk swoops down and eats the snake. What is the role of the hawk?

I believe that your correct answer would be "</span><span>Tertiary consumer".

Hope this helps.

~Jurgen


</span>
8 0
3 years ago
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Why is a DNA molecule called a double helix?
krok68 [10]

Answer:

A

Explanation:

Because there are two DNA strands in the DNA molecule and they both rotate around each other in a helix formation. So two helixes = double helix.

5 0
3 years ago
Read 2 more answers
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