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ValentinkaMS [17]
4 years ago
5

Please help me on this one thank you

Biology
1 answer:
BlackZzzverrR [31]4 years ago
4 0
The answer to 20. is A.
B wouldn't affect the plates,
C would push the plates downwards,
and D.... I don't even know what that is.
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Answer:

It has two tissue layers.

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