The first step in preparing your speech is to take a step back and try to look at it from the perspective of an audience member. See how they would perceive your speech - make sure it's understandable from their point of view and go from there.
Sunlight, oxygen, water, nutrients/food, and stable conditions such as temperature
Montag gets on the subway and starts reading the Bible, because he wants to memorize some lines from it. However, he is being constantly distracted and interrupted by an advertisement for Denham's Dentrifice toothpaste, as its jingle is played over and over again on the subway. He gets really mad because of it and starts screaming and yelling, before he leaves at the next stop.