Answer:
3. fats
Explanation:
fats are in the food used by animal cells, fats and lipids can be used for things such as storing energy in the cells
hope this helps :)
The answer would be thermal insulator, hope it works goodluck
Answer:A
Explanation: Teacher gave me the answer
<span>The circulatory system is vital in the exchange of oxygen with the cells in the animal's body because there is no living creature that can survive without oxygen, it keeps the body active.
</span>♡♡Hope I helped!!! :)♡♡
