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.

Fact: an electromagnet contains cylindrical ferrous metal
A common household item that may be a ferrous metal is?

Fact: a prism refracts light
A beam of sunlight strikes a stained glass window and?

Fact: the decrease of something required by an organism has a negative impact on that organism 's survival

If an environment experiences a long drought?