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

Example Input: Macroevolution happens when forces of evolution work over a long period of time.
Example Output: What happens when forces of evolution work over a long period of time?

Example Input: Bees are naturalized on every continent except antarctica.
Example Output: Bees are naturalized on every continent except which?

Example Input: Prokaryotes are unicellular organisms that lack organelles surrounded by membranes.
Example Output:
Prokaryotes are unicellular organisms that lack organelles surrounded by what?