What would happen without excretory systems in humans?
A) Wastes would build up in blood and damage the body.
B) Blood would not circulate through the body.
C) Oxygen would not enter the blood stream.
D) Nutrients would not be absorbed.

Answer :

Apocrophon
I think A because the liver filters out wastes from the blood, and so without the liver the wastes would build up and be dangerous for the body.

The answer to this would be (A)

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