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The monsoon winds bring rainfall in India. Agriculture is India'smain economic activity and is dependent on rains. Good monsoons mean adequate rain, and a bountiful crop.

The different seasons in India are: the Cold Weather Season (Winter) December to February, the Hot Weather Season (Summer) March to May, the South West Monsoon Season( Rainy season) June to September,and the Season of Retreating Monsoon (Autumn) October and November.

The grass, shrubs and trees that grow without interference or help from human beings are called natural vegetation.They are dependent on different climatic conditions,among which the amount of rainfall is very important.

The different types of vegetation found in India are: Tropical evergreen forests or Rain forests, Tropical deciduous forests, Thorny bushes, Mountain vegetation and Mangrove forests.

Tropical rain forests or evergreen forests are found in areas receiving heavy rainfall. They are very dense. They shed their leaves at different times of the year. As a result, they always appear green.Important trees found in these forests are mahogany,ebony,rubber and rosewood. Tropical deciduous forests are also called monsoon forests. They are less dense.They shed their leaves at a particular time of the year.Important trees of these forests are sal,teak,peepal,neem,shisham and sandalwood.

The states of Andhra Pradesh and Tamil Nadu receive a great amount of rainfall during the season of retreating monsoons.

The tropical rainforests are found where there is heavy rainfall of over 200 cm As the rainfall is adequate,the trees retain their leaves and remain green throughout the year. And they shed their leaves at different times of the year.Therefore,they always appear green and are called evergreen forest.