sminatalicaLundin sminatalicaLundin

18-07-2016
Health

contestada

The circulatory system includes the heart, select one:
a. air passages, and blood vessels.
b. blood, and blood vessels.
c. lungs, and air passages.
d. lungs, and blood vessels.

Respuesta :

amys31gifts amys31gifts

18-07-2016

b. blood and blood vessels.

All of the other answers include lungs or air passages, which are part of the respiratory system.

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