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

Meiosis is part of the process of gametogenesis, which is the production of sperm and eggs.
Meiosis is part of the process of gametogenesis, which is the production of what?

Some materials have negative heats of solution; the dissolution of one of these solutes in water is called?
Some materials have negative heats of solution; the dissolution of one of these solutes in water is called?

Competive exclusion princple explains why two different species cannot occupy the same niche in the same place for very long.

What explains why two different species cannot occupy the same niche in the same place for very long?