joanwalden42 joanwalden42

14-02-2020
Social Studies

contestada

What are the three essential chemical elements in the biosphere?
nitrogen, oxygen, and carbon
carbon, oxygen, and helium
oxygen, carbon, and iron
nitrogen, carbon, and hydrogen

Respuesta :

zinnia30 zinnia30

14-02-2020

Answer:

hydrogen carbon oxygen nitrogen

Explanation:

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