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: Bees are naturalized on every continent except antarctica.

Answer: Bees are naturalized on every continent except which?


Question: Pleiotropic effects causes symptoms associated with sickle-cell disease.

Answer: What causes symptoms associated with sickle-cell disease?


Question: Circulating the air prevents ethylene from accumulating, and carbon dioxide inhibits synthesis of new ethylene.

Answer:
Circulating the air prevents ethylene from accumulating, and carbon dioxide inhibits synthesis of new what?