Across
- 5. - large stream of flowing freshwater.
- 10. - low, flat land lying next to the ocean.
- 11. - narrow strip of land connecting two larger land masses.
- 12. - varied or having many different types.
- 13. - small, low island on a coral reef. Also called a key.
- 14. - area of tall, mostly evergreen trees and a high amount of rainfall.
- 15. - area of land that receives no more than 25 centimeters (10 inches) of precipitation a year.
- 16. - large grassland; usually associated with the Mississippi River Valley in the United States.
- 17. - ecosystem filled with trees and underbrush.
- 19. - area of land covered by shallow water or saturated by water.
Down
- 1. - series or chain of mountains that are close together.
- 2. - all forms in which water falls to Earth from the atmosphere.
- 3. - ecosystem with large, flat areas of grasses.
- 4. - wetland area usually covered by a shallow layer of seawater or freshwater.
- 6. - cold, treeless region in Arctic and Antarctic climates.
- 7. - body of land surrounded by water.
- 8. - landmass that forms as tectonic plates interact with each other.
- 9. - large region that is higher than the surrounding area and relatively flat.
- 18. - body of water surrounded by land.