When you need to discrete, which typically comes as diarhhea if its severe. Hope this was helpful! (:
Answer: kidneys
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.
<span>A series of ONE-WAY VALVES </span>are necessary to prevent backflow of blood when b<span>lood pressure in veins is lower than in the arteries.</span>
