Unit 4 Crossword Puzzle

2. A forest that grows in regions of the northern hemisphere with cold temperatures. Made up mostly of cold tolerant coniferous species such as spruce and fir.
5. A dense forest rich in biodiversity, found typically in tropical areas with consistently heavy rainfall.
8. A patch of land that has been forced to become a desert because mountain ranges blocked all plant-growing, rainy weather.
14. the first to colonize barren environments or previously biodiverse steady-state ecosystems that have been disrupted
16. succession that begins in essentially lifeless areas, such as regions in which there is no soil or where the soil is incapable of sustaining life
17. A flat, treeless Arctic region of Europe, Asia, and North America in which the subsoil is permanently frozen.
18. The measurement of distance north or south of the Equator.
20. forest composed primarily of broad-leaved trees that shed all their leaves during one season.

1. the final stage of biotic succession attainable by a plant community in an area under the environmental conditions present at a particular time.
3. The direction wind is coming from; downwind.
4. A graphical representation of a location's basic climate.
6. plants and animals recolonize a habitat after a major disturbance
7. the change in either species composition, structure, or architecture of vegetation through time
9. Plants and animals that have common characteristics for the environment they exist in.
10. A thick subsurface layer of soil that remains frozen throughout the year, occurring chiefly in polar regions.
11. A barren area of landscape where little precipitation occurs
12. The direction wind is coming from; upwind.
13. A large open area of country covered with grass, especially one used for grazing.
15. A zone of the earth where land, water, air interact with each other to support life.
19. The distance above sea level.