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25-07-2019
Biology

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What is the advantage and disadvantage of animals that have placenta with those do not have placenta.

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chihuahualove80 chihuahualove80

25-07-2019

the advantage of the placenta is that pregnant animals hardly notice the presence of small embryos during the early stages.

in animals without a placenta all necessary nutrients should be present in the egg prior to fertilization.

hope i could help and good luck!

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