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

Photoautotrophs and chemoautotrophs are two basic types of autotrophs.
Photoautotrophs and chemoautotrophs are two basic types of what?

Simple kind of diffusion do small hydrophobic molecules squeeze through lipid molecules.
What kind of diffusion do small hydrophobic molecules squeeze through lipid molecules?

Antartica continent is the only one that reptiles don't inhabit.

Which continent is the only one that reptiles don't inhabit?