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

Ex Input:
Rainfall weather phenomenon increases the rate of weathering in rock and soil.

Ex Output:
What weather phenomenon increases the rate of weathering in rock and soil?


Ex Input:
The frequency of a wave is the reciprocal of the period of the wave.

Ex Output:
The frequency of a wave is the reciprocal of what other attribute of the wave?


Ex Input:
Human activity has a bigger impact on water quality, natural events or human activity.

Ex Output:

What has a bigger impact on water quality, natural events or human activity?