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: Warm and humid temperature and moisture conditions describe an air mass that originates over the atlantic ocean near the equator.

Answer: Which temperature and moisture conditions describe an air mass that originates over the Atlantic Ocean near the equator?


Question: A concave lens is thicker at the edges than it is in the middle.

Answer: What type of lens is thicker at the edges than it is in the middle?


Question: It is dark does photosynthesis not occur in the deep-water zone.

Answer:
Why does photosynthesis not occur in the deep-water zone?