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

Input: Consider Input: Water affects the availability of oxygen important element in aquatic environments and in flooded soils.

Output: Water affects the availability of what important element in aquatic environments and in flooded soils?

Input: Consider Input: Reptiles are described by the term ectothermic, which means their internal temperature depends on the temperature of their environment.

Output: Reptiles are described by what term that means their internal temperature depends on the temperature of their environment?

Input: Consider Input: Sympatric speciation is when a new species arises without geographic separation.
Output: What is it called when a new species arises without geographic separation?