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प्रश्न
Name and briefly explain four ways by which pollution of air caused by humans is minimised.
उत्तर
Pollution of air by humans can be minimised in the following manner :
- In the thermal power plants, steel plants etc., electric precipitators should be used to reduce the smoke and ash entering the air.
- Efficient internal combustion engines should be used in vehicles.
- Improved chulha or stoves should be used to minimise the production of smoke and carbon-monoxide.
- We must grow more trees as they absorb harmful gases.
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