It is important because nature is what helps them live
Answer:
They lie flat when we are warm, and rise when we are cold. The hairs trap a layer of air above the skin, which helps to insulate the skin against heat loss. For example, if we become too cold, the hair erector muscles contract.
Explanation:
Answer: D. Amylase
Explanation:
Amylase is a enzyme that breaks down protein present in food.
"Obtain and use energy" is your answer :)