Answer: 28 weeks
Explanation: It takes until about 4 weeks for the respiratory system of a fetus to begin to develop. However, by week 28, there is enough matured alveoli that a prematurely born baby can actually breath on its own at this time. The surfactants keep the alveoli from collapsing.
Answer:
maybe like 2
Explanation: My pull out game strong
True
Yoga can help a person be more aware of their breathing, balance, etc. and help with strength and flexibility.
<span>Of the physical activities listed , which is the most Vigorous ?
C. playing a game of vollyball
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