Respuesta :

Well enegry helps them stay active all the time but at night even animals need to rest to restore energy for the next day and nutrients helps them grow and gives them vitimn a, c ,b ,e, and d  oh and iron it also helps them to be active in some caces.
  
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Answer: Animals use nutrients and energy to keep vital functions functioning properly and stay alive.

Explanation:

Animals use the nutrients obtained from food in order to obtain the energy needed to carry out physiological functions properly.  

Most animal cells undergo a series of chemical reactions in which organic molecules from food and oxygen are consumed to release energy. This process is known as aerobic cell respiration and occurs in an organelle called mitochondria.