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o-na [289]
3 years ago
6

Only two markers of human activity are evident in the stratosphere.

Biology
1 answer:
hodyreva [135]3 years ago
7 0

Answer:

Option A. the condition of the ozone layer and the presence of spy planes.

Explanation:

Stratosphere is very important layer because a very important gas i. e. Ozone is present. Ozone gas makes a layer around the earth which prevents the earth from harmful ultraviolet radiation of the sun. This radiation causes skin disease such as skin cancer. Aeroplane and jets also fly in this region.

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