TASK DEFINITION: Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
PROBLEM: Gravity makes soil and rock particles move gradually down the slope during each thaw.

SOLUTION: What makes soil and rock particles move gradually down the slope during each thaw?

PROBLEM: Smaller size of ring will a summer drought cause in a tree.

SOLUTION: What size of ring will a summer drought cause in a tree?

PROBLEM: Micropipettes are suitable for measuring very small amounts of liquids.

SOLUTION:
What kind of pipettes are suitable for measuring very small amounts of liquids?