Question

why do animal take in oxygen​

Answer 1

Oxygen burns the food within their bodies and releases energy for various activities and thus it helps animal to be alive. to use it in respiration! ... Animals need oxygen (O) to survive. In fact, all organisms need oxygen to complete the process to burning glucose for fuel.

Answer 2

Required Answer:-

When an animal breathes, it takes in oxygen gas and releases carbon dioxide gas into the atmosphere. This carbon dioxide is a waste product produced by the animal's cells during cellular respiration. Cellular respiration occurs in the individual cells. Digested foods have chemical energy stored in them