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

Ex Input:
Mesoderm type of cell layer do flatworms have.

Ex Output:
What type of cell layer do flatworms have?


Ex Input:
Terrestrial biomes are classified by climatic factors and types of primary producers.

Ex Output:
What are classified by climatic factors and types of primary producers?


Ex Input:
Balloon deflates will happen if the gas particles inside an inflated balloon suddenly stop moving.

Ex Output:
What will happen if the gas particles inside an inflated balloon suddenly stop moving?