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

If a gas in a closed area experiences increases in pressure and decreases in temperatures, the volume of the gas will be affected.
If a gas in a closed area experiences increases in pressure and decreases in temperatures, what other attribute of the gas will be affected?

Bacteria may divide several times an hour.
Bacteria may divide several what an hour?

Destructive interference in waves occurs two troughs what things overlap.

Destructive interference in waves occurs when what things overlap?