Which of the following is correct?
A.
When the lungs contract, they fill with air from the a...
Social Studies, 13.05.2021 03:30 gracieorman4
Which of the following is correct?
A.
When the lungs contract, they fill with air from the atmosphere.
B.
When the heart contracts, it fills with air from the atmosphere.
C.
When the lungs expand, they fill with air from the atmosphere.
D.
When the heart expands, it fills with air from the atmosphere.
Answers: 1
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