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: Sucrose is formed when a monomer of glucose and a monomer of fructose are joined in a dehydration reaction to form a glycosidic bond.

Answer: What is formed when a monomer of glucose and a monomer of fructose are joined in a dehydration reaction to form a glycosidic bond?

Question: The sun delivers power to the chemical factory chloroplasts.

Answer: What delivers power to the chemical factory chloroplasts?

Question: Potential energy type of energy is possessed by autumn leaves before they fall.

Answer:
What type of energy is possessed by autumn leaves before they fall?