Available Answers

1. 1.

   Name four major constituents of the air. Also give their volume proportions in the air.

2. 2.

   Mention two uses of air?

3. 3.

   Describe the process of respiration?

4. 4.

   Describe balance of oxygen in the air?

5. 5.

   Identify two major sources of atmospheric carbon dioxide and oxygen?

6. 6.

   Demonstrate through a simple experiment that the air mainly contains oxygen and nitrogen in the volume ratio of 1:4?