If you want what it does it protects the cells from its surroundings, It's made of embedded proteins I believe. Hope that helped please answer my question.
It is C, thick fur i’m pretty sure bc it keeps them warm
Answer: Erythrocytes also known as Red blood cell compose about 40-45% of blood
Explanation: 40-45% of the blood volume is erythrocytes i.e the red blood cell. It contains heamoglobin a special protein that carries oxygen to the lungs.
<h2>Hibernation</h2>
Explanation:
C) the animal convert their stored fat molecules into ATP molecules; since ATP is highly unstable its uncoupled hydrolysis generates internal heat .
Hibernation can be referred as winter sleep. It is a process followed by animals to escape cold temperatures during winter. Most of the hibernating animals store fat in their body and have greater body mass. During this hibernation period their body breaks down the stored fat to release heat and keep the animal warm.