| A | B |
|---|
| glaciers | huge sheets of ice that move slowly over land |
| Ice Age | any period of time in the past when glaciers covered half of Earth's land |
| adapt | to change in order to be suitable to fit a different condition or purpose |
| climate | the usual weather in an area |
| survive | to stay alive |
| migrate | to move from one area to another to live |
| land bridge | land mass that connects two bridge |
| environment | the surrounding area |
| terrain | the kind of land in a givin area |
