Class 8 Biology Pollution of Air and Water Introduction


The nature is a boon to us. The part of earth in which living and non-living organisms exist is called the biosphere. It contains a huge variety of species living in it that interdepends on each other. The interrelationship of the species and their relationship with the environment to support life is called biological diversity.

This community of organisms interacting with each other and their physical environment is called ecosystem.





But in the recent decades the increasing development activities by the human beings have proved to be a threat to the biological diversity on earth.

The growing population leading to increased need for land, food, natural fuels, and other necessary products from nature have brought a havoc effect on the earth.


Clean earth to polluted earth

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