Sentences with phrase «slowly by natural processes»

Not exact matches

You will find a host of articles that describe in detail the process by which the great forests of the Cretaceous Period (circa 145 - 65 million years ago) slowly develop into coal and how sea life slowly developed into oil and natural gas.
Natural processes in the atmosphere slowly destroy these non-CO2 GHGs over time, mainly by oxidation in the troposphere (0 - 20 km high), and by «photolysis» with UV rays in the stratosphere (> 20 km).
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