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Geomorphic Processes

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Question
CBSEENGE11010505
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What are soils ?

Solution

Soils are products of a complex mixture of weathered and eroded rock material on the one hand and the organic matters on the other.

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Question
CBSEENGE11010506
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What is humus?

Solution

The decomposition of plants and microorganisms releases organic chemicals that interact with the loose materials is called humus. It is the dead organic matter in the soil.

Question
CBSEENGE11010507
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 Name the primary factors responsible for the development of soils.

Solution

The primary factors responsible for the development of soils are :
1. Parent material,
2. Climate,
3. Biological Activity,
4. Topography,
5. Time.

Question
CBSEENGE11010508
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How many essential elements are required by plants ?

Solution

Most plants require atleast 16 essential elements such as carbon, hydrogen, oxygen, phosphorus, nitrogen, sulphur, calcium, iron, magnesium, manganese, copper, zinc and chlorine, etc.
Plants utilise carbon, hydrogen, oxygen from air and water. Nitrogen, phosphorus and potassium are absorbed from soil and fertilizers.

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