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

Plasma membranes encloses and defines the borders of cells.
What encloses and defines the borders of cells?

Water and humidity is the critical factor for the survival of segmented worms.
What is the critical factor for the survival of segmented worms?

When light meets matter, it may be reflected, transmitted, or absorbed.
When light meets matter, it may be reflected, transmitted, or what?