Air is a mixture of only three gasses nitrogen, oxygen and carbon dioxide.
True
False
Air is a mixture of many gasses including nitrogen, oxygen and carbon dioxide. It also consists of water vapour, fine dust particles.
Natural air contains oxygen, nitrogen and carbon dioxide in the ratio 12 : 5 : 3. Find the percentage of nitrogen in the air.
Why plants don't absorb nitrogen from the air directly like carbon dioxide and oxygen
State true or false. Plants take in oxygen and give out carbon dioxide during respiration.