Given a fact, create a question that can be answered using the fact. Construct the question such that it is unambiguous, has a unique answer and the answer can be given using the fact.

[EX Q]: Fact: flowing liquid can push objects
[EX A]: If a creek is headed to the west and a stone is tossed in and sinks, but a leaf also drops in and stays on top of the water, what will likely happen?

[EX Q]: Fact: as a source of light becomes closer , that source will appear brighter
[EX A]: As a car approaches you in the night?

[EX Q]: Fact: an landfill is a source of pollution
[EX A]:
Landfills can cause?