chapter 7 of geography class 7 name of chapter soils
Answers
Explanation:
Write one word for the following.
1. Decayed plant and animal remains .....................
2. Disintegration of rocks on the Earth's surface caused by exposure to natural forces .....................
3. Removal of trees on a large scale .....................
4. Planting of trees on large scale on deforested land .....................
5. A type of pesticide that should be used to decrease soil pollution .....................
ANSWER:
Humus
Weathering
Deforestation
Afforestation
Organic pesticide
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Question 2:
Define the following
1. Soil profile
2. Soil erosion
3. Soil conservation
ANSWER:
Soil profile is a vertical section of the soil from the top soil, down to the parent rock, showing different soil layers.
Soil erosion is defined as the removal of soil (particularly the top soil) by agents such as wind or running water.
Steps adopted to avoid or at least reduce soil erosion is known as soil conservation