The key function of the kidneys is _____?

گردوں کا کلیدی کام _____ ہے؟

Removal of excess carbon dioxide from blood

Pumping blood to the heart

Removal of excess water from blood

Removal of urea and other nitrogenous wastes from blood

Filter blood: Kidneys filter waste products and excess fluid from the blood.

The main function of the kidneys is to filter the blood and remove waste products from the body:

Filter blood: Kidneys filter waste products and excess fluid from the blood.
Excrete waste: Kidneys excrete waste products, like urea and uric acid, into the urine.