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.
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Question: Fact: as the available water in an environment increases , the populations of organisms in that environment will increase

Answer: To aid in increasing the population of an organism in an environment?


Question: Fact: temperature is a measure of heat energy

Answer: An active oven will make the mercury in a thermometer go?


Question: Fact: natural events usually cause changes to Earth 's surface

Answer:
Tsunamis?