Life exists only in the biosphere; organisms are found only in the thin outer layer of the Earth’s crust, and are always separated from the surrounding inert matter by a clear and firm boundary. Living organisms have never been produced by inert matter. In its life, its death, and its decomposition an organism circulates its atoms through the biosphere over and over again, but living matter is always generated from life itself.
KeywordsClay Migration Dioxide Dust Sulfide
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