TASK DEFINITION: Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
PROBLEM: Instead of heat, organisms use catalysis to speed up reactions.

SOLUTION: Instead of heat, organisms use what to speed up reactions?

PROBLEM: Gravity makes soil and rock particles move gradually down the slope during each thaw.

SOLUTION: What makes soil and rock particles move gradually down the slope during each thaw?

PROBLEM: Normal body temperature is ideal for most of biochemical type of reactions.

SOLUTION:
Normal body temperature is ideal for most of what type of reactions?