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Yakvenalex [24]
4 years ago
15

Proteins must always contain what element

Biology
1 answer:
WINSTONCH [101]4 years ago
3 0
Nitrogen must always be contained in proteins
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Five types of evidence for evolution are discussed in this section: ancient organism remains, fossil layers, similarities among organisms alive today, similarities in DNA, and similarities of embryos. Another important type of evidence that Darwin studied and that is still studied and used today is artificial selection, or breeding.

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