Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

Q: A decline in blood flow to kidneys organs stimulates release of the enzyme renin, in turn stimulating the reabsorption of sodium and water.

A: A decline in blood flow to what organs stimulates release of the enzyme renin, in turn stimulating the reabsorption of sodium and water?
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Q: The action of flushing the toilet, performed multiple times daily, is the single biggest use of water in the home.

A: What action, performed multiple times daily, is the single biggest use of water in the home?
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Q: Tonsils structures are located on roof of the nasopharynx and on each side of the pharynx.

A:
What structures are located on roof of the nasopharynx and on each side of the pharynx?
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