CSS :: Associated Concepts in Forestry
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Ozone layer having:
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[A]. |
The protective layer of ozone in the upper stratosphere, found at a level between 15 and 150 km above | [B]. |
The Earth which prevents harmful ultraviolet B radiation which causes skin cancer and threatens plant life from reaching the ground
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[C]. |
Both (a) & (b) | [D]. |
None of these |
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