Asked by Harshvardhan | 28th Apr, 2008, 04:31: PM

Expert Answer:

It is a biochemical process by which living organisms take in oxygen from the environment and give out carbon dioxide, releasing heat energy by the breakdown of food.

Answered by  | 3rd May, 2008, 12:43: PM

Queries asked on Sunday & after 7pm from Monday to Saturday will be answered after 12pm the next working day.