Question

Write a short note on the following:-

1. Significance of Himalayas to India

2. Penisular Plateau

3. Main causes of the pollution in thw rivers of the India
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Answer 1

Answer:

1. 2.peninsular plateau

The peninsular plateau is a table land composed of the old crystalline ,igneous and metamorphic rocks. it was formed due to the breaking and drifting of the gondwana land and thus ,making it a part of an oldest landmass.the plateau has broad and shallow valleys and rounded hills.This plateau consists of two broad divisions,namely,the central Highlands and the deccan plateau .The part of the peninsular plateau lying to the north of the Narmada river covering a major area of the Malwa plateau which is known as the central Highlands.

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Answer 2

ANSWER:-1

(i) The Himalayas lie on the northern border of India like a physical barrier. They separate India from Central Asia.

(ii) They have huge cover of snow and glaciers which are the sources for a number of perennial rivers of India. These rivers helped in the formation of northern plains of India, therefore provide water for irrigation, navigation and for generating hydel-power.

(iii) The Himalayas also act as climatic barriers, since they protect the northern plains in winters from the freezing cold winds blowing from Central Asia. They are also able to stop and deflect the rain bearing southern-west monsoon winds towards northern plains of India.

(iv) Forests in the foothills of Himalayas provide habitat for a number of wild animals, birds, insects etc.

(v) In Himadari, there are a number of beautiful hill stations like Shimla, Mussoorie, Nainital, Darjeeling.(vi) Besides, these mountains also provide a natural protection to India from any kind of invasion from outside.

ANSWER:-2

• Roughly triangular in shape with its base coinciding with the southern edge of the great plain of North India. Apex of the triangular plateau is at Kanniyakumari.

• It covers a total area of about 16 lakh sq km (India as a whole is 32 lakh sq km).

• The average height of the plateau is 600-900 m above sea level (varies from region to region).

• average height of the plateau is 600-900 m above sea level (varies from region to region).Most of the peninsular rivers flow west to east indicating it’s general slope.

• Narmada-Tapti are the exceptions which flow from east to west in a rift (rift is caused by divergent boundary (Go back to Interaction of plates).

ANSWER:-3

• Industrial waste. ...

• Sewage and wastewater. ...

• Mining activities. ...

• Marine dumping. ...

• Accidental oil leakage. ...

• The burning of fossil fuels. ...

• Chemical fertilizers and pesticides. ...

• Leakage from sewer lines.

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