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

[EX Q]: Water affects the availability of oxygen important element in aquatic environments and in flooded soils.
[EX A]: Water affects the availability of what important element in aquatic environments and in flooded soils?

[EX Q]: Climate map type of map would show average temperatures and rainfall.
[EX A]: What type of map would show average temperatures and rainfall?

[EX Q]: Most of food's chemical energy ultimately comes from sunlight.
[EX A]:
Most of food's chemical energy ultimately comes from what source?