Answer:
Organisms, such as humans, take in "substrates" such as glucose, in our food. During a process called respiration, we react these substrates with oxygen to give carbon dioxide and water; this takes place in the mitochondria of our cells.
Explanation:
East Sussex England
hope that helps
<span>Leonardo da Vinci, Michelangelo, Raphael, and Donatello. </span>
