What is the definition of respiration

Question

Process by which animals maintain body temperature
The process by which organisms obtain energy by taking in oxygen and releasing carbon dioxide
The process by which dead plants break down and return carbon to the soil
When greenhouse gases trap heat in earths atmosphere

Answer 1

The correct definition of respiration is:

The process by which organisms obtain energy by taking in oxygen and releasing carbon dioxide.

Respiration is a biochemical process by which cells convert glucose and oxygen into energy, carbon dioxide, and water. This process is essential for the survival of aerobic organisms.