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What are the most common chemical elements in most living things?
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2 Answers

That's hard to pin down.
 

I'll say carbon, nitrogen, oxygen, and phosphorus. It differs in other organisms, though.
by Level 2 User (2.9k points)
edited by
CHNOPS - six most common elements in all life forms:  carbon, hydrogen, nitrogen, oxygen,  phosphorus and sulfur.

Vertebrates differ slightly with calcium being a major part of the skeleton so it edges out sulfur as one of the top six.

The biology of the elements:    http://www.webelements.com/biology.html
by Level 2 User (700 points)

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