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

Input: Consider Input: All of the populations that live in the same area make up a(n) community, which includes populations of different organisms.

Output: All of the populations that live in the same area make up what type of group, which includes populations of different organisms?


Input: Consider Input: Limestone is insoluble in water, so acid can dissolve it.

Output: Limestone is insoluble in water, so what can dissolve it?


Input: Consider Input: All types of cells are enclosed by a membrane.
Output: All types of cells are enclosed by what?