Question

human biengs have one circulation or double circulation and why it is so plzzzz answer fast

Answer 1

double circulation becay blood travels twice through heart

Answer 2

HIII

GOOD MORNING

HUMAN BEINGS HAVE DOUBLE CIRCULATION .AND WE KNOW THAT HUMAN BEINGS HAVE FOUR CHAMBERED HEART AND DIFFERENT ARTERIES AND VEINS CARRY OXYGENATED AND DIOXEYGENATED BLOOD.


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