Select your answer:
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Transportation in Organisms › ViewWhat are the waste products eliminated by the excretory system in living organisms?
A. Food
B. Oxygen
C. Water
D. Waste products
Physiology › View
An average heartbeat, or cardiac cycle, lasts approximately:
A. 0,80 seconds
B. 0,008 seconds
C. 8,0 seconds
D. 60 seconds
E. 80 seconds