contestada

heart is to the _____ system as lungs are to the ______ system

A) circulatory; respiatory
B) endocrine; muscular
C) respiatory; endocrine
D) nervous; endocrine

Respuesta :

maddiemerna
The answer is A. The heart pumps blood through the circulatory system, and the lungs help the oxygen transport throughout the respiratory system. :)

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