I don't know maybe it is a white blood cell
Answer:
<em>The kidneys act as very efficient filters for ridding the body of waste and toxic substances, and returning vitamins, amino acids, glucose, hormones and other vital substances into the bloodstream. The kidneys receive a high blood flow and this is filtered by very specialised blood vessels.</em>
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They had to change they way they live which is quite difficult it is like you going to a new school in a new state and not being used to anyone
Answer:
Serotonin
Explanation:
Please mark me brainliest