Question

What is respiration?????

Answer 1

Explanation:

A process in living organism involving the production of energy typically with the intake of oxygen and release of carbon dioxide from the oxidation of complex organic substances.

Or

Simply, we can say that respiration is process of taking in oxygen and expelling carbon dioxide.

Source:GOOGLE

Answer 2

Respiration is a process in living organisms involving the production of energy, typically with the intake of oxygen and the release of carbon dioxide from the oxidation of complex organic substances