<span>The nephron is the basic structural and functional unit of the kidney, it regulates the concentration of water and soluble substances like sodium through filtering the blood, reabsorbing what is needed and excreting the rest as urine. Therefore urine should be free of blood as the nephron filters the blood, cleaning it for the body to reuse.</span>
Answer:
Death is the permanent, irreversible cessation of all biological functions that sustain a living organism.
People die in all sorts of things
Explanation:
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The cardiovascular system is your heart and blood vessels. If it stopped working, that would affect your whole body
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