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The factors responsible for depletion of flora and fauna are:

The first factor is the increase in pollution, where the economic development of the country is the main reason. The fact is the wastes from the industries are discharged into the river water, lakes and sea which affects the whole ecosystem.

The second factor is the excess deforestation. The extinction of various plants and animals should be avoided.

The population in India is increasing day by day, which results in the increased pressure on resources of the nation. This is one of the factors responsible for depletion of flora and fauna.