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4 votes
A b c d ? please help me :)

A b c d ? please help me :)-example-1

2 Answers

1 vote
A would be the correct answer
answered
User Jussi Kukkonen
by
8.4k points
5 votes

Answer:

a

Step-by-step explanation:

its a semi permeable membrane. it chooses what can go in and out so nothing bad happens.

answered
User Gigo
by
7.6k points

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