Sunderbans are the tidal forests. These are found near the sea coast in the areas flooded by tides of the seas. The Sundari trees grow abundantly in this region. So, these forests are called Sunderbans. Other trees found here are mahogany, rosewood and bamboos.

The climate of India has broadly been described as monsoon type.
Monsoon is taken from the Arabic word 'mausim', which means 'seasons'. Due to India's location in the tropical region, most of the rain is brought by monsoon winds.

Forests are useful to us in the following ways:
(i) Plants release oxygen that we breathe and absorb carbon dioxide.
(ii) The roots of the plants bind the soil and thus, they control soil erosion.
(iii) Forests provide us with timber for furniture, fuel wood, fodder, medicinal plants and herbs, lac, honey, gum, etc.
(iv) Forests are the natural habitat of the wild life.

Weather is the day-to-day changes in the atmosphere. It includes changes in temperature, rainfall and sunshine, etc.
Climate is the average weather conditions, which have been measured over many years.

A wide range of species is found in the mountains according to the variation in height. With increase in height, the temperature falls. At a height between 1500 metres and 2500 metres, most of the trees are conical in shape. These trees are called coniferous trees. Chir, pine and deodar are important trees of these forests.

Thorny bushes are found in dry areas of the country. The leaves are in the form of spines to reduce the loss of water.
Cactus, khair, babool, keekar are important and are found in the states of Rajasthan, Punjab, Haryana, Eastern slopes of Western Ghats and Gujarat.

The various seasons of India are as follows:
Cold Weather Season (Winter) December to February
Hot Weather Season (Summer) March to May.
South-West Monsoon Season (Rainy) June to September
Season of Retreating Monsoon (Autumn) October and November.

The climate of a place is affected by its location, altitude, distance from the sea, and relief. Therefore, we experience regional differences in the climate of India.
Jaisalmer and Bikaner in the desert of Rajasthan are very hot, while Drass and Kargil in Jammu and Kashmir are freezing cold. Coastal places like Mumbai and Kolkata experience moderate climate.

During the winter season. cool. dry winds blow from North to South. The sun rays do not fall directly in the region. As a result, the temperatures are quite low in Northern India. Whereas, in the hot weather season, sun rays more or less directly fall in this region. Temperature becomes very high. Hot and dry winds called 100, blow during the day.

Tropical rain forest always appears green and therefore it is called evergreen forest.

Following are the differences between evergreen forest and deciduous forest:

The different types of vegetation found in India are:
Tropical evergreen forests  
Tropical deciduous forest
Thorny bushes
Mountain vegetation
Mangrove forest

The grasses, shrubs and trees, which grow on their own without interference or help from human beings, are called natural vegetation.

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

Monsoon winds bring rainfall in India and it is important because these winds bring sufficient rain which helps in growing good crops.