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Biology, 20.10.2019 20:30 mellobunbun
The amnion is an extra-embryonic membrane that surrounds the embryo and encases it in amniotic fluid.
which animal lacks an amnion?
a) frog
b) lizard
c) pigeon
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The amnion is an extra-embryonic membrane that surrounds the embryo and encases it in amniotic fluid...
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