berwenskydort berwenskydort

06-01-2019
Health

contestada

Which of the following is correct? A. When the heart expands, it fills with air from the atmosphere. B. When the lungs contract, they fill with air from the atmosphere. C. When the lungs expand, they fill with air from the atmosphere. D. When the heart contracts, it fills with air from the atmosphere.

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FlexiLexi321 FlexiLexi321

06-01-2019

I would say B. Glad to help!

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