instruction:
Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
question:
The cerebellum of the brain lies under the cerebrum and behind the brain stem.
answer:
What part of the brain lies under the cerebrum and behind the brain stem?

question:
Most have cells that are not able to exchange gases with the outside environment do multicellular organisms need transport systems.
answer:
Why do multicellular organisms need transport systems?

question:
Induced or spontaneous are the two methods in which mutations arise in dna.
answer:
What are the two methods in which mutations arise in dna?