Across
- 3. area populated by grasses and other nonwoody plants
- 6. the weather pattern in an area
- 8. the slow motion of the continents
- 12. species that are carried to a new location
- 15. land ecosystems with similar climates and organsims
- 16. an area that receives less than 25 centimeters of precipitation
- 18. layer of shorter plants that grow in the shade of a canopy
- 19. a leafy roof formed by tall trees in a forest
Down
- 1. a diagram that shows the amount energy that moves
- 2. soil that is frozen all year
- 4. area between the highest high-tide and the lowest low-tide
- 5. tree that sheds its leaves and grows new ones each year
- 7. the study of where organisms live
- 8. tree that produces its seeds in cones and needle-shaped leaves
- 9. the changes that happen to nitrogen gas
- 10. region of shallow ocean water over the continental shelf
- 11. extremely cold,dry biome
- 13. grassland close to the equator that gets as much as 120 centimeters of rain
- 14. the movement of organisms from one place to another
- 17. habitat in which fresh water meets salt water