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Viktor [21]
2 years ago
12

How many tissue layers does an embryo have?

Biology
1 answer:
erik [133]2 years ago
7 0

Answer:

they have 3 layers

Explanation:

endoderm, the ectoderm, and the mesoderm.

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the rapid depolarization phase of the action potentials of myocardial contractile cells is due to which ion(s)?
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The other cat has (I dont know what letters your using so I'm going to use 'c'.
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Shtirlitz [24]

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