Why is it a mistake to overuse exclamation point when writing

Which is a higher ratio, 6: 9 or 3: 7

In "tell me, o swan, your ancient tale," to what does the land where no doubt nor sorrow have rule refer? nature heaven the promised land an imaginary country

What is indirect characterization? 1 when the author shows a character’s traits through words and actions 2 when a character expresses her true nature by acting in an opposite manner 3 when the narrator tells what a character is like with an explicit description 4 when a narrator is also a character in a story who provides internal thoughts