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

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.
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?

Tight junction is the term for a watertight seal between two adjacent animal cells.
What is the term for a watertight seal between two adjacent animal cells?

Crustaceans go through different larval stages.

What goes through different larval stages?