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Taya2010 [7]
3 years ago
14

2. The ______________ is a semipermeable membrane that forms a boundary between the cell and the external environment.

Biology
2 answers:
poizon [28]3 years ago
6 0
The cell membrane is the answer hope I. Helped
Natalija [7]3 years ago
4 0
I think it is C. Vacuole 
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https://www.nationalgeographic.org/topics/limiting-factors/?q=&page=1&per_page=25

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