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1 vote
5. A system of membranes and tubes that create
passages through which materials can pass? |

2 Answers

7 votes

Answer: paper

Step-by-step explanation:

User Merilstack
by
5.9k points
4 votes

Answer:

paper or glass

Step-by-step explanation:

for they use needles to get and they transfer it to paper for studying

User Resander
by
4.7k points