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

Hybridization model model helps explain molecules with double or triple bonds.
Which model helps explain molecules with double or triple bonds?

Pheromones enable communication, which is vital for organisms like ants that live in a large community.
Pheromones enable what, which is vital for organisms like ants that live in a large community?

Dinosaurs filled the niches that mammals fill today during the mesozoic era.
Dinosaurs filled the niches that mammals fill today during which era?