2. Angelfish live in the deepest part of the ocean. They have very big and sharp teeth. They look very scary. If you see an angelfish you
do not need to be scared. Most angelfish are very small.

A. What is the author's purpose?

B. How do you know?

The author is trying to tell us about angel fish, how they look and where they are found. The author also states his/her opinion by telling us how the May look frightening, but we needn’t be scared, since they are small.

B- how do you know?
Because the author states facts, like where angel fish live and how they look, but also states opinions like how he or she thinks they are scary.

Hope this is what ur looking for!!