A)
Air component Source Effect/Role Oxygen Plants It is needed for burning things.
B)
Air component Source Effect/Role Smoke Factories vehicles, etc. it makes the air dirty.
C)
Air component Source Effect/Role Germs Sunlight They can make us fall ill.
D)
Air component Source Effect/Role Water vapours River Jake, sea. ocean, etc. On cooling, they form tiny drops of water.
Correct Answer: C
Solution :
Sun gives us light and heat. It is not the source of germs.
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