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ArbitrLikvidat [17]
3 years ago
7

Can someone please help me?

Biology
1 answer:
e-lub [12.9K]3 years ago
5 0
Carbon<span> is a key element found in all carbohydrate, lipids, proteins and nucleic acids, which are all organic macromolecules.

So, the answer is b) Carbon

Hope this helps!

-Payshence xoxo</span>
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