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

Ex Input:
Virtually all aquatic organisms depend directly or indirectly on protists for food.

Ex Output:
Virtually all aquatic organisms depend directly or indirectly on what for food?


Ex Input:
Solid is characterized by molecules with minimal movement and strong forces between them.

Ex Output:
Which state of matter is characterized by molecules with minimal movement and strong forces between them?


Ex Input:
Cold summers kind of summers do humid continental climates have.

Ex Output:

What kind of summers do humid continental climates have?