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: Cancer occurs most often in adults over fifty age.

Answer: Cancer occurs most often in adults over what age?


Question: A mushroom is the fruiting body that occurs after two hyphae mate and form a mycelium with sporangia.

Answer: What is the fruiting body that occurs after two hyphae mate and form a mycelium with sporangia?


Question: When the temperature of water is increased after being used in cooling, it is thermal pollution.

Answer:
When the temperature of water is increased after being used in cooling, it is this form of pollution?