Rainfall and Vegetation
Raging monsoons, heavy rainfall, and a scorching sun. South Asia's weather varies day to day which makes the climate and the vegetation impossible to predict. In the areas where there is not heavy rainfall and monsoons there is baron desert.
Temperature changes throughout South Asia!
The Himalayas are such a magnificent sight. You would never think that they contribute to the rainfall in South Asia. When the winds of the Bay of Bengal reach the Himalayas the moist air rises and then slowly cools. The cool air releases moisture as rain!!! Unfortunately for the cities directly south of the Himalayas get very heavy rainfall.
On some mountains the rain creates something called rain shadow. Winds blowing from the Arabian Sea drop their moisture off on the coastal plains. Which leaves the Deccan Plateau very dry and baron. As a result of this the Deccan Plateau can only support low trees and scattered grasses.
Like the rainfall the temperature varies greatly. In some regions such as the Western Ghats temperatures can be very cold. But in most of South Asia the weather is very tropical .
Natural Resources
In some parts of South Asia there is fertile soil such as in Indo-Gangetic Plain. But in other areas the soil is very worn out.
Irrigation is the technique farmers use to keep their crops plentiful. Even though there is a lot of rain most of it comes during a monsoon. Besides irrigation farmers dig wells to store water in. However in some areas such as the Deccan Plateau it is more difficult to find water. To get the water that is essential for their crops to grow they must dig wells that are 200 feet deep into the ground so that they can use irrigation.
South Asia has a variety of mineral resources. In many parts of India there is high quality iron ore. India also is rich in manganese, bauxite, and copper. In the Northern Plains coal, mica, limestone, and gypsum are plentiful.
Peoples of South Asia
The population in South Asia is a staggering 1.1 billion people!!! So that means that 1 of every 5 people lives in South Asia.
South Asia is a region of cultural diversity. Over thousands and thousands of years people from all over have moved to this sub-continent. Geographic features, however, have separated the people into regional and local groups and each has their own way of life. Throughout South Asia people have different customs, eat different foods, dress in different ways, and respect different things. Even something as simple as making bread can very from place to place. For example in northern India women roll dough flat and cook it on a griddle but in the south they eat boiled rice and make pastes of rice.
A clear sign of where you live in South Asia is what language you speak. For example in a country as small as Nepal there is 13 different languages! India alone has more than 700 different languages and dialects!
References: http://wikipedia.com