Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
--------
Question: Demagnetization is the process in which a magnet loses its magnetic properties.

Answer: What is the process called in which a magnet loses its magnetic properties?


Question: While the numerical aperture can be used to compare resolutions of various objectives, it does not indicate how far the lens could be from the specimen.

Answer: While the numerical aperture can be used to compare resolutions of various objectives, it does not indicate how far the lens could be from the what?


Question: Algae is a promising alternative to traditional crops for biofuel type of fuels.

Answer:
Algae is a promising alternative to traditional crops for what type of fuels?