Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
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Question: For to synthesize glycogen purpose does liver use the excess carbohydrate.

Answer: For what purpose does liver use the excess carbohydrate?


Question: A(n) an ionic bond forms when the metal sodium gives up an electron to the nonmetal chlorine.

Answer: What forms when the metal sodium gives up an electron to the nonmetal chlorine?


Question: Rock containing fossilized seashells found on a mountaintop of the following provides the best evidence that earth has evolved over geologic time.

Answer:
Which of the following provides the best evidence that Earth has evolved over geologic time?