Question

Write the composition of air. Write one importance of oxygen and carbon dioxide each.

Answer 1

Air is a mixture of various gases, smoke and dust particles.
Air mainly contains 78% Nitrogen gas, 21% Oxygen gas and 1% of carbon dioxide, argon and other gases.
Oxygen is important for life. It is important for respiration in all living oragnisms. Carbon dioxide is a greenhouse gas and helps to maintain the temperature on earth.