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

Ex Input:
Yeast fermentation causes holes in bread.

Ex Output:
What causes holes in bread?


Ex Input:
Constructive forces type of forces are involved when deposited rock forms deltas or barrier islands.

Ex Output:
What type of forces are involved when deposited rock forms deltas or barrier islands?


Ex Input:
Heat travels from the sun to the earth thermal radiation from the sun.

Ex Output:

How does heat travel from the sun to the earth?