Describe the evolution of atmosphere and hydrosphere
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Answer:
The early atmosphere, with hydrogen and helium, is supposed to have been stripped off as a result of the solar winds. Then, during the cooling of the earth, gases and water vapour were released from the interior solid earth. This started the evolution of the present atmosphere.
Explanation:
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Answer:
There is no direct evidence for water for the period between 4.6 billion and 3.9–4.0 billion years ago. Thus, ideas concerning the early history of the hydrosphere are closely linked to theories about the origin of Earth. ... It has been concluded that Earth's core formed over a period of about 500 million years
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Evolution of the atmosphere
WRITTEN BY
J.M. Hayes
Distinguished Professor of Biogeochemistry, Indiana University, Bloomington. Coauthor of Chemical Separations and Measurements.
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Evolution of the atmosphere, the development of Earth’s atmosphere across geologic time. The process by which the current atmosphere arose from earlier conditions is complex; however, evidence related to the evolution of Earth’s atmosphere, though indirect, is abundant. Ancient sediments and rocks record past changes in atmospheric composition due to chemical reactions with Earth’s crust and, in particular, to biochemical processes associated with life