The lining of the gut and the stomach, liver, and
pancreas are produced by
a. the ectoderm.
b. the endoderm.
c. the mesoderm.
d. two of the germ layers.
e. all of the germ layers.
Answer: b
Biology & Microbiology
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In ________ countries, the doubling time is often small
Fill in the blank(s) with correct word
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