Biology, 21.01.2021 23:10 dezmondpowell
During which stage of fetal development do the heart and lungs of a fetus become fully developed and functional?
A.
first trimester
B.
fertilization
C.
third trimester
D.
second trimester
Answers: 2
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During which stage of fetal development do the heart and lungs of a fetus become fully developed and...
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