Question

Explain how excretory substances in the blood are removed by
1 the lungs
2 the kidneys
3 the skin

Answer 1

Answer:

by the kidneys through ultrafiltration of glomerulas

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Answer 2

Explanation:

The kidneys remove from the blood the nitrogenous wastes such as urea, as well as salts and excess water, and excrete them in the form of urine. This is done with the help of millions of nephrons present in the kidney. The filtrated blood is carried away from the kidneys by the renal vein (or kidney vein).

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