Biomes and Communities
Across
- 2. Region with little to almost no plant life; the driest biome.
- 4. Any biotic or abiotic factor that restricts the existence, numbers, reproduction, or distribution of organisms.
- 5. Biome that surrounds the north and south poles; treeless land with long summer days and short periods of winter sunlight.
- 6. Biome near the equator with warm temperatures, wet weather, and lots of plant growth.
- 12. Layer of permanently frozen soil that lies under the topsoil of the tundra.
- 13. Group of ecosystems with the same climax communities.
- 15. Part of the shore that lies between high tide and low tide lines.
Down
- 1. A zone that is part of the marine biome and shallow enough for sunlight to reach.
- 2. Biome made up of forests of broad-leaved hardwood trees that lose their leaves every autumn.
- 3. Coastal body of water, partly surrounded by land, in which freshwater and saltwater mix.
- 5. Biome just south of the tundra; contains northern coniferous pine, fir, hemlock, and spruce trees and acidic, mineral-poor topsoil.
- 7. Orderly, natural changes, and species replacements that take place in ecosystem communities over time.
- 8. A type of community that is stable with little or no change over time.
- 9. Biome made up of large communities covered with grasses and similar small plants.
- 10. Part of the marine biome that is too deep for sunlight to reach.
- 11. When pioneer organisms move into new land is exposed by avalanches, volcanoes, or glaciers, a ____ succession takes place.
- 14. _____ succession happens after a community is affected by natural disasters or human activities.