Across
- 7. A group of many islands
- 8. A large, flowing body of water that usually empties into a sea or ocean
- 11. A fertile spot in a desert where water is found
- 12. A grassy plain in tropical and subtropical regions, often with few trees
- 13. The process where water, wind, or ice wears away land
- 15. A large, dry, sandy area with very little rain
- 17. Imaginary lines on the Earth that measure distance north or south of the Equator
- 18. A low area of land, often surrounded by mountains, where rivers collect
- 19. A dense, tropical forest with a large variety of plants and animals
- 20. A large mass of ice that moves slowly over land
Down
- 1. Flat land near a river that is prone to flooding
- 2. Land consisting of marshes or swamps, saturated land
- 3. A mountain that can erupt with lava, ash, and gases
- 4. A large, open pit from which stone is extracted
- 5. A seasonal wind, often bringing heavy rain
- 6. The usual weather conditions in a particular area
- 9. A piece of land surrounded by water
- 10. A piece of land almost surrounded by water
- 14. Half of the Earth, divided into northern and southern parts
- 16. A cold, treeless area; it is the coldest biome