Chemistry
Grade-6
Easy
Question
Which of the following activities does not cause air pollution?
- Uses of chemical weapons in war
- By planting more trees
- By using household cleaning products
- By using more fertilizers
Hint:
Air pollution is caused by harmful gases present in the air.
The correct answer is: By planting more trees
Planting more trees does not cause air pollution.
Plants improve air quality through several mechanisms: they absorb carbon dioxide and release oxygen through photosynthesis.
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