The cells that develop to form the outer lining of an animal's body make up the _[blank]_.

blastula

ectoderm

endoderm

mesoderm

Respuesta :

Answer:

The answer is ectoderm. The mesoderm is the middle layer of lining. The endoderm is the innermost layer. You can remember it by:

Endo/ sounds like inner

Meso/ M for middle

Ecto/ sounds like exo, bugs have exoskeletons that are on the outside.

Explanation:

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