Sometime between 22 and 26 weeks, a. a fetus has a chance of survival outside the womb. b. the external genitals are formed. c. synchrony between the fetal heart rate and motor activity peaks. d. vernix and lanugo begin to cover the skin.

The answer is a) a fetus has a chance of survival outside the womb.

Sometime between 22 and 26 weeks, a fetus has a chance of survival outside the womb.

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explanation:

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a. decomposes use carbon from dead organisms as fuel for cellular respiration, returning carbon dioxide back into the atmosphere.