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

[EX Q]: Metabolism produces waste energy in the form of heat, which helps warm-blooded (endotherm) animals conserve and maintain heat at a relatively constant body temperature.
[EX A]: Metabolism produces waste energy in the form of heat, which helps what type of animal conserve and maintain heat at a relatively constant body temperature?

[EX Q]: Sexually do invertebrates reproduce.
[EX A]: How do invertebrates reproduce?

[EX Q]: Fission takes place when an animal simply divides into two parts.
[EX A]:
What type of reproduction takes place when an animal simply divides into two parts?