Answer:
how to kill a mocking bird is a really good one
A gear. The two gears feed into each other
Political nonsense and really really really bad news
Answer:
"Marian Anderson Sings" includes dialogue while the biography only includes description.
Explanation:
The major difference between the description of the Easter Sunday event as narrated in "Marian Anderson Sings" and how it was described in the biography of Marion Anderson is that there is dialogue used in the description of the Easter Sunday event while in the biography, there is only description.