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

[Q]: A fewer predators is most likely to cause the number of rabbits living in an area to increase.
[A]: Which factor is most likely to cause the number of rabbits living in an area to increase?

[Q]: Injuries can be prevented by getting proper rest and recovery.
[A]: Injuries can be prevented by getting proper what?

[Q]: Present-day plants that have a complex vascular tissue system are called vasuluar plants.
[A]:
Present-day plants that have a complex vascular tissue system are called what kind of plants?