Insects do NOT have

Whales and Dolphins breathe through

Running makes a person breathe

In humans giving out of carbon dioxide during breathing is called:

Respiration is a _______ process.

An adult frog breathes through:

__________ is the process of releasing energy by breaking down food for the life process.

Insects breathe through holes in their body called________.

The process which breaks down food to release energy with the help of oxygen and respiratory enzymes is called:

An organism that can survive in the absence of air