Question

4. Answe a) Air is a mixture of nitrogen, oxygen, carbon dioxide water vapour, and a few othe gases. For which gases are plants and animals dependent on each other? Explain how they help each other in the exchange of these gases.
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Answer 1

Answer:

Air is a mixture of nitrogen, oxygen, carbon dioxide, water vapour and a few other gases. Some dust particles may also be present in it. Oxygen supports burning and is necessary for living organisms. The envelope of air that surrounds the earth is known as atmosphere.