Across
- 3. a decrease in value or amount
- 5. a large flat area of land without trees in very cold northern parts of the world
- 9. become larger, or to make something become larger
- 10. to gradually change behavior in order to become successful
- 11. a circle that divides a sphere or other surface into two equal parts
- 12. a structure such as a fence that is intended to prevent access or keep one place separate from another
- 13. fairly large area of a state or country, usually without exact limits
Down
- 1. not expected to change;steady
- 2. land and sea areas with their unique plants, animals, water, and air
- 4. a group of similar plants or animals living together
- 6. scattering or spreading of something over an area
- 7. a kind, sort, or variety of something
- 8. move from one place to another