Notes

Water Sources * Water is essential for domestic use, cultivation and also for industries. *  Around 97% of the total water available on the earth lies in the seas and oceans. * Only 2.5% exits as fresh water. * Nearly 70% of the fresh water is locked in ice and glaciers. * Just under 30% ... Read more

Forest and Ecosystem * Forest impacts our environment in a variety of ways. They control:    *  Climate    *  Soil erosion    *  Pollution * Forests also support a variety of industries and offer scenic beauty. * There are very few areas left in India where the vegetation can be called natural in the ... Read more

Soil As A Resource * Soil is formed over millions of years by agents like weathering of rock by natural variation in temperature, wind, glaciers and running water. Basics for classification of soil are:    *  Physical and chemical properties    *  Age    *  Texture    *  Colour Different types of soils in India ... Read more

Climate of India * In India, the Tropic of Cancer passes through the central part of the country. * India has both tropical and subtropical climates. * Altitude refers to the height above sea level. * The Himalayas influences the climate of the Indian subcontinent by protecting it from the cold air mass of Central ... Read more

Formation * India has been formed over several geological periods. * According to the theory of Plate Tectonics, the earth’s crust was formed out of seven major and some minor plates. Tectonic plates are classified into:    *  Convergent boundary    *  Divergent boundary    *  Transform boundary * Gondwanaland originally consisted of Asia, Africa, ... Read more