write an essay on "air for respiration"
Answers
Answer:
Air contains two essential components: Oxygen and Carbon dioxide, which makes life possible. Oxygen is required by plants and animals to convert the chemical energy stored in food into energy that they can use for various metabolic processes.
Answer:
The air us forms the atmosphere of the earth. It extends from the ground to about 11 km into space. It gets denser due to gravity as we approach the ground. It has the right amount of pressure and composition to sustain life. Air is a mixture of various gases found in the Earth ś atmosphere. Usually, the air is colourless, odourless and tasteless. It consists of about 78%nitrogen , 21%oxygen, 0.9%organ,0.04%carbon dioxide and trace amounts of other gases. Air plays a vital role in the existence of life on earth.
The three essential roles of air are as follows :
- Air for Breating.
- Air for Combustion .
- Air for Regulating Temperature.