Romeo and Juliet are both young teenagers. This is a contribution to their death because teenagers tend to over react at situations. Romeo and Juliet overreacted when they thought their crush died. They believed this was the end of the world for them.
In question like this you need to provide context like in Fahrenheit 451 on page(ex) then ask. But Montag was mostly afraid that the captain would begin to notice that he was starting to question their ways and if burning the books is really the right thing to do.
*Answer:*
Simile
Explaining