Which organ filters blood in human body?

A. Lungs

B. Heart

C. Liver

D. Kidneys

Answer: Option D

Solution(By Examveda Team)

Kidneys filter waste and toxins out of the blood. They are responsible for taking waste out of other fluids in the body as well.

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Ozone hole refers to

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C. decrease in thickness of ozone layer in stratosphere

D. increase in the thickness of ozone layer in troposphere