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

[EX Q]: Renewable energy sources emit fewer or no greenhouse gases.
[EX A]: What type energy sources emit fewer or no greenhouse gases?

[EX Q]: The double helix dna shape forms when the two nucleotide chains wrap around the same axis.
[EX A]: What distinctive dna shape forms when the two nucleotide chains wrap around the same axis?

[EX Q]: Integral proteins are embedded in libid bilayer.
[EX A]:
Where are integral proteins embedded?