The two reason are development and if a event happens to the character, the character would change his attitude toward life, like someone dying would change the tone of the story.
Wow very inspiring I see.
Is this about a specific poem?
Answer:
plot is a sequence of connected events that are bound together by cause and effort
subplot is a side story that exists within the main plot. The subplot is connected to the main story but never overpowers it
Explanation:
D the thrid person omniscient pint of geek means that readers :