Wednesday 2 January 2013

Overpopulation

Overpopulation the population of an environment by a particular species in excess of the environment's carrying capacity. The effects of overpopulation can include the depletion of resources, environmental deterioration, and the prevalence of famine and disease. Pollution is defined as the unwanted sound which is released into the environment. It disturbs the human being and cause an adverse effect on the mental and psychological well being. The effect of noise pollution can divided into two type. One is human health, another one is wildlife health.


Water Pollution

Moreover, our life greatly depends on water and life without water is impossible. Water pollution not only affects the fish and animals living in the water but also affects the whole food chain by also transferring the contaminants to the consumers depending on these animals. The 75% of the earth’s surface is covered with water and more that half of the total population of earth’s species resides in water. Water used from a polluted lake directly contaminates its user. Many of the water creatures are on the verge of extinction due to the dramatic increase in the water pollution. That are the cause of water pollution, its liken air and soil pollution water pollution is that it kills life that depends on these water bodies. Dead fish, crabs, birds and sea gulls, dolphins, and many other animals often wind up on beaches, killed by pollutants in their habitat (living environment).
Pollution disrupts the natural food chain as well. Pollutants such as lead and cadmium are eaten by tiny animals. Later, these animals are consumed by fish and shellfish, and the food chain continues to be disrupted at all higher levels.





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