Q2 A of 12 Page 74

Answer the following questions in about 30 words.

What is soil?


Soil is top-most layer of the earth, formed by years of erosion of the parent rock material. It is a mixture of debris and organic material, which sustains life by providing essential nutrients.


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1

Choose the right answer from the four alternatives given below.

Which one of the following is the main reason for the loss of the top soil in India?


 1 D

Choose the right answer from the four alternatives given below.

Arable land in the irrigated zones of India is turning saline due to which of the following reasons?


 2 B

Answer the following questions in about 30 words.

What are the main factors responsible for the formation of soil?


 2 C

Answer the following questions in about 30 words.

Mention the three horizons of a soil profile.