Give 2 differences between primitive atmosphere & present day atmosphere.
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primitive atmosphere:
1.it did not had ozone layer.
2.its most common element was hydrogen.
Recent atmosphere:
it has ozone layer.
it's contains 0.04 % hydrogen
1.it did not had ozone layer.
2.its most common element was hydrogen.
Recent atmosphere:
it has ozone layer.
it's contains 0.04 % hydrogen
Answered by
3
Explanations
Primitive Atmosphere:
1. It was reducing (without free oxygen) atmosphere.
2. Its most common element was hydrogen.
3. It had no ozone layer therefore ultraviolet radiation freely reached the earth.
4. It was very hot.
5. It was favourable to origin of life. It allowed chemical evolution.
Recent Atmosphere:
1. It is oxidizing (with free oxygen) atmosphere
2. It has about 20.95% oxygen and less than 0.04% of hydrogen.
3. It has thick ozone layer that prevents the ultraviolet radiation reaching the earth
4. It has moderate temperature.
5. It is not favourable to origin of life. It does not allow chemical evolution.
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