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

Water can be boiled to kill giardia and most other pathogens.
Water can be boiled to kill giardia and most other what?

Processing of filtrate in the proximal tubule helps maintain the ph level in body fluid.
Processing of filtrate in the proximal tubule helps maintain what level in body fluid?

Asci are used by mycelia for sexual kind of reproduction.
Asci are used by mycelia for what kind of reproduction?