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

Instead of heat, organisms use catalysis to speed up reactions.
Instead of heat, organisms use what to speed up reactions?

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?

A healthy diet is the best way to maintain a strong, fit body.

Which is the best way to maintain a strong, fit body?