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प्रश्न
71% of earth surface is covered with:
पर्याय
Land
Air
Water
Coal
उत्तर
Water
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संबंधित प्रश्न
Have you ever observed any water pollution in your area? What measures would you suggest to control it?
Clear, transparent water is always fit for drinking. Comment.
Define pollution. “Industries are pouring poison in water” - Explain
Study the picture given below and answer the following questions :
Name one pollutant that causes the above the pollution.
Study the picture given below and answer the following questions :
State one measure to control this pollution.
Explain the following :
(i) Eutrophication ;
(ii) Biomagnification
Water is not necessary for our basic needs.
Do not throw plastic garbage when you go near beaches.
Mention the standards prescribed by BIS for quality of drinking water.
Oxygen is returned to the atmosphere mainly by
