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

Glaciers deposit their sediment when they melt.
When do glaciers deposit their sediment?

During the early paleozoic, the amount of carbon dioxide in the atmosphere was much greater compared to today.
During the early paleozoic, the amount of carbon dioxide in the atmosphere compared to today was?

A(n) fungus causes ergot, a disease that impacts crops directly and has more devastating effects on animals.

A type of what organism causes ergot, a disease that impacts crops directly and has more devastating effects on animals?