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

Ex Input:
Natural resource type of resource is limited in supply and cannot be replaced except over millions of years.

Ex Output:
What type of resource is limited in supply and cannot be replaced except over millions of years?


Ex Input:
Stem basic plant structure facilitates dispersal of pollen and fruit by raising reproductive structures.

Ex Output:
What basic plant structure facilitates dispersal of pollen and fruit by raising reproductive structures?


Ex Input:
Due to the time it takes for light to reach us, galaxies at the edge of the universe are distant in terms of space and time.

Ex Output:

Due to the time it takes for light to reach us, galaxies at the edge of the universe are distant in terms of space and what else?