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प्रश्न
Have you ever observed any water pollution in your area? What measures would you suggest to control it?
उत्तर
Water pollution arises as a result of various human activities. This includes discharges from wastewater treatment plants, run-off from agricultural fields, storm-water drainage, etc. Pollutants from these sources enter the water bodies, thereby contaminating the water and rendering it impure.
Industries and chemical factories discharge toxic, heavy metals such as Fe, Mn, Al, etc., along with organic wastes into water. Domestic sewage and animal excreta are also responsible for pathogenic contamination of water. These pollutants make water unfit for drinking.
Therefore, all industrial and chemical discharges should be made free from toxic metals before allowing them to enter a water body. The concentration of these pollutants should be checked regularly. Compost should be preferred over chemical fertilizers in gardens and agricultural fields to avoid harmful chemicals from entering ground water.
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संबंधित प्रश्न
Define pollution. “Industries are pouring poison in water” - Explain
Explain the following :
(i) Eutrophication ;
(ii) Biomagnification
Fill in the Blanks:
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What are the pollutions caused by the objects given below?
- Loud Speaker
- Plastic
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BOD is measure of ______.
Liquid kitchen waste alone constitutes the sewage.
Hot water discharged into water bodies hardly affects the fish and other aquatic life.