TASK DEFINITION: Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
PROBLEM: All life is built around the element carbon.

SOLUTION: What element is all life built around?

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

SOLUTION: A decline in blood flow to what organs stimulates release of the enzyme renin, in turn stimulating the reabsorption of sodium and water?

PROBLEM: Another unit of energy, used widely in the health professions and everyday life, is calorie ( cal )?

SOLUTION:
Another unit of energy, used widely in the health professions and everyday life, is _______?