When the two comets collided, it was a moment of impact.
The students had a moment of impact in the hallway when they ran into each other.
descent noun (RELATION) [ U ] the state or fact of being related to a particular person or group of people who lived in the past: She's a woman of mixed/French descent. They trace their line of descent back to a French duke.
Answer: The answer is below.
Comparing:
Both of the themes from these excerpts are about how you can be able to learn despite differences in yourself from others.
Contrasting:
The theme of <em>The Story of My Life</em> by Helen Keller is that you are able to do anything you put your mind to, even if you are physically impaired in some way.
The main theme in the excerpt of <em>The Narrative of the Life of Frederick Douglass</em>, is that you can learn how to do things even if you are of a different ethnic background.
In other words, the main character in the story are different in different ways (one is blind, the other was of a different ethnicity)