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

[Q]: Fungi is the major cause of disease in agricultural crops.
[A]: What is the major cause of disease in agricultural crops?


[Q]: In machines that increase force, such as ramps and doorknobs and nutcrackers, output is greater is the relation between output and input force.
[A]: In machines that increase force, such as ramps and doorknobs and nutcrackers, what is the relation between output and input force?


[Q]: It solidifies happens to a substance in a liquid state when the temperate is lowed.
[A]:
What happens to a substance in a liquid state when the temperate is lowed?