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aliya0001 [1]
3 years ago
10

7. A cell membrane has two layers of molecules. These molecules are made of a phosphorus-

Biology
1 answer:
Gemiola [76]3 years ago
5 0

Answer: a they are made up of fatty acids

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B.  by mutating their DNA in response to environmental conditions to gain beneficial traits.

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Thus, option B) is the right answer.

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