| A | B |
|---|
| glacier | a great mass of ice that moves very slowly down and mountain or along a valley, or spreading very slowly over a land area. |
| impressive | able to impress the mind, feelings, conscience. |
| naturalist | a person who studies living things. |
| preserve | to keep from harm or change; protect |
| slopes | land that goes up or down at an angle |
| species | a set of related living things that share certain characteristics and that can interbreed. |
| wilderness | a wild region with few or no people living in it. |
| altitudes | heights above Earth's surface |
| formations | things that are formed |
| reservoir | a place where water is collected and stored for use. |
| main idea | what the story is about |
| supporting details | things that prove the points of a story. |
