Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
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Question: If a gas in a closed area experiences increases in pressure and decreases in temperatures, the volume of the gas will be affected.

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

Question: Over 90% of the energy we use comes originally from the sun.

Answer: Over 90% of the energy we use comes originally from what?

Question: Nerve cells that sense touch are found mainly skin.

Answer:
Nerve cells that sense touch are found mainly where?