blackblossom1 blackblossom1

16-02-2017
Geography

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what are the three essential chemical elements in the biosphere?

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babygirl426 babygirl426

16-02-2017

I would say Carbon, Hydrogen and Oxygen.

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Jsteph14 Jsteph14

22-02-2017

The three essential chemical elements in the biosphere are; nitrogen, oxygen, and carbon dioxide.

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