Across
- 3. when people explored and settled the western part of North America
- 5. a long, sandy island parallel to the seashore that protects the shores from waves and wind off the ocean
- 6. mounds or small hills of sand created by wind and waves
- 7. a group or category of plants
Down
- 1. travel from one location to another at certain times of the year
- 2. almost extinct
- 4. networks of plants, animals, and the environment they live in