Question

I. One Word Answer type Questions

1. Name two processes that consume oxygen in air.

2. Name one process which puts back oxygen in air.

3. Name one process which removes carbon dioxide from air.

4. Name a gas in air which is used by plants for making food by photosynthesis.

5. Name two processes which put back carbon dioxide into air.

II. Short Answer Type Questions

6. Atmosphere is a blessing. Justify your answer.

7. Write the main causes of air pollution.

8. What is air pollution? State some steps to control air pollution.

III. Long answer Type Questions

9. How will you show that air (or oxygen) is necessary for burning?

10. Explain how, the oxygen in air (or atmosphere) is replaced.​

Answer 1

Answer:

1) inspiration

2) expiration

3) photosynthesis

4) carbon dioxide

5) a)burning of carbon compounds

b) expiration in humans

6)atmoshere has ozone which protect from ultraviolet rays

7)★ burning of plastic

★industries

★mining

8) undesirable changes in air is called air pollution.

9)C+O2=CO2

10)