He jumped off a building. This is said by Montag during the discussion with Mrs. Phelps and Mrs. Bowles.
In "Fahrenheit 451," Gloria's husband is killed by the Mechanical Hound after being mistaken for Montag, the protagonist. The Hound's mistake leads to a chain of events that ultimately sets Montag on a path of rebellion against the oppressive society in which he lives.
Clarisse died presumably due to being hit by a car.
She gets run over by a car
The city was leveled due to an atom bomb.
451 degrees Fahrenheit
I know that paper combusts at 451 deg fahrenheit.
Fahrenheit 451 is the heat at which paper burns
451 degrees Fahrenheit, as the movie title reminds you.
Mrs. Phelps
The title of Fahrenheit 451 is Fahrenheit 451. The shorter version of the story was called "The Fireman", which was the basis for Fahrenheit 451. The reason why this book was entitled Fahrenheit 451 is because the temperature in which books burn is Fahrenheit 451.
Montag wears the number 451 on his helmet in Fahrenheit 451. The number signifies the temperature at which book paper burns.
Clarisse died, she was hit by a car although nobody is completely sure how she died.
Mildred Montag said this in "Fahrenheit 451." She expresses the sentiment while talking to her husband, Montag, indicating the busy and disconnected nature of their society where interactions and relationships are superficial.
Mrs. Bowles's first name in "Fahrenheit 451" was Mildred.