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

[EX Q]: Ectothermic vertebrates control body temperature to just a limited extent from the outside by changing behavior.
[EX A]: What type of vertebrates control body temperature to just a limited extent from the outside by changing behavior?

[EX Q]: Prostate is the most common type of cancer in adult males.
[EX A]: What is the most common type of cancer in adult males?

[EX Q]: Producers in an ecosystem generally get their energy from the sun.
[EX A]:
Where do producers in an ecosystem generally get their energy from?