Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

Q: Exotic species are also called invasive species because they threaten other species.

A: Why are exotic species also called invasive species?
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Q: The male reproductive system consists of structures that produce sperm and secrete testosterone.

A: What does the male reproductive system consist of?
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Q: Global air currents creates wet and dry zones at different latitudes.

A:
What creates wet and dry zones at different latitudes?
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