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Strike441 [17]
3 years ago
6

A student made this model using paper molecules and a piece of yarn.she wants to show how simple transport works.

Biology
2 answers:
Minchanka [31]3 years ago
6 0

Answer:

b

Explanation:

to balance the concentration

lbvjy [14]3 years ago
3 0
I think it’s B because it’s outside cell
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