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Did You India is one of the top ten countries in the world with the most forests. After
Know? agriculture, forests are the second largest land use in our country. About 67.83
million hectares of land is covered in forests which constitutes 20.64 % of our
country’s total geographical land area.

Soil

The loose top layer of the Earth on which plants

grow is called soil. The formation of soil is a long and

continuous process. Soil is formed when rocks break

up, and plants and animals start decaying. The process

of breaking up of rocks by the

action of water, wind and sunlight Soil
on the surface of the earth is

called weathering. This process

continues for many years till the Organic layer

rocks become small particles. Topsoil

These small particles get mixed Subsoil

with decayed bodies of animals Parent Material

and plants and gradually form Bedrock

soil.
Soil contains sand, silt and clay in different proportions.
Sand soil
Some kinds of soils have high sand content while some

Silt soil other kind has more clay content.

Think &
Answer Nothing on Earth can be grown without soil.
Clay soil Can we grow plants in all types of soils? Why?

Non-renewable Resources

The natural resources which are limited in supply and do not last forever are

called non-renewable resources. Millions of years are required for natural

processes to regenerate these resources. Coal, petroleum, minerals and

natural gas are some non-renewable resources.

Let us learn about some non-renewable resources.

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