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OpenStudy (anonymous):
The four essential elements for life are _______. a. carbon, hydrogen, oxygen and nitrogen b. carbon, hydrogen, oxygen and sulfur c. carbon, nitrogen, oxygen and sulfur d. iron, nitrogen, oxygen and magnesium
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OpenStudy (anonymous):
Hydrogen, Oxygen, Carbon, Nitrogen
OpenStudy (anonymous):
A
OpenStudy (anonymous):
:)
OpenStudy (abhisar):
Yeah it's C, N, O and H
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