A part of respiration

We breathe air into our______________and the  chest expands.

Burning is a_____________process.

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

Insects do NOT have

An adult frog breathes through:

As tadpoles, frogs breathe through

 Respiration in plants takes place through

 The air we breathe in, is not the same as the air we breathe out and the process is called

Respiration is a _______ process.