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

Low energy causes waves to bring sand up onto the beach during summers.
What causes waves to bring sand up onto the beach during summers?

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?

Vertebrates reproduce sexually.

In which way do vertebrates reproduce?