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

Ex Input:
Elements are pure substances that make up all matter.

Ex Output:
Elements are pure substances that make up what?


Ex Input:
Spring tides are created when the sun and moon's tides match.

Ex Output:
Which type of tides are created when the sun and moon's tides match?


Ex Input:
The spines of a cactus help it survive because spines protect the cactus from animals.

Ex Output:
How do the spines of a cactus help it survive?