instruction:
Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
question:
Water affects the availability of oxygen important element in aquatic environments and in flooded soils.
answer:
Water affects the availability of what important element in aquatic environments and in flooded soils?

question:
Chewing insects such as dragonflies and grasshoppers have two many sets of jaws.
answer:
Chewing insects such as dragonflies and grasshoppers have how many sets of jaws?

question:
Due to the time it takes for light to reach us, galaxies at the edge of the universe are distant in terms of space and time.
answer:
Due to the time it takes for light to reach us, galaxies at the edge of the universe are distant in terms of space and what else?