Pollution of water originates mainly from human activities.
Mention the adverse effects of high fluoride concentration in drinking water.

Pollution of water originates mainly from human activities. What do you mean by the term PCB ?

Pollution of water originates mainly from human activities. How do chemical pollutants cause eutrophication?

The water pollutants mainly responsible for eutrophication are

Environmental pollution is the effect of undesiral changes in surroundings that have harmful effect on plants, animals and human beings. a) Explain the adverse effect of global warming. b) Choose the one which is not a component of photochemical smog. i) NO_2 ii) O_3 iii) SO_2

The process of 'eutrophication' is due to : increase in concentration of insecticide in water, increase in concentration of fluoride ion in water, The reduction in concentration of the dissolved oxygen in water due to phosphate pollution in water, attack of younger leaves of a plant by peroxyacetyl nitrate.

Environmental pollution is the effect of undesirable change in surroundings that have harmful effect on plants, animals and human beings. Explain the adverse effect of global warming.