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

Circannual behavioral rhythms are linked to the yearly cycle of seasons.
What type of behavioral rhythms are linked to the yearly cycle of seasons?

Seedless and seed are the two divisions of vascular plants.
What are the two divisions of vascular plants?

A(n) chemical bond is a force of attraction between ions and atoms.

What bond is a force of attraction between ions and atoms?