In this task, you are given a question and an answer, you would be asked to create the sentence based on the Question-Answer provided. It should be contained within the Question-Answer provided.

[Q]: Question: What occurs when a substance reacts quickly with oxygen? Answer: combustion reaction
[A]: Combustion reaction occurs when a substance reacts quickly with oxygen.


[Q]: Question: During an earthquake, wet soils become like what? Answer: quicksand
[A]: During an earthquake, wet soils become like quicksand.


[Q]: Question: Pathogenic prokaryotes usually cause illness by producing what? Answer: poisons
[A]:
Pathogenic prokaryotes usually cause illness by producing poisons.