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

[Q]: The ability of matter to combine chemically with other substances is known as reactivity.
[A]: The ability of matter to combine chemically with other substances is known as?


[Q]: Photoautotrophs and chemoautotrophs are two basic types of autotrophs.
[A]: Photoautotrophs and chemoautotrophs are two basic types of what?


[Q]: Protist diseases in humans are caused by protozoa.
[A]:
What type of diseases in humans are caused by protozoa?