Given a scientific question, generate a correct answer to it.

[EX Q]: The pion can only be created by violating the conservation of what?
[EX A]: mass-energy

[EX Q]: What type of pressure is the pressure exerted by gas particles in earth's atmosphere as those particles collide with objects?
[EX A]: atmospheric pressure

[EX Q]: What consists of these five stages: prophase, prometaphase, metaphase, anaphase, and telophase?
[EX A]:
mitosis