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Biology
6. Natural Resources
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Q1 of 287 Page 347

Define soil erosion.

Soil erosion is defined as blowing away of land surface i.e. soil by wind or water.


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24

Green house effect is caused by

25

Ozone hole over Antarctica appears during

2

Mention any three human activities which are responsible for depletion of the ozone layer.

3

Name any two greenhouse gases.

Questions · 287
6. Natural Resources
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