Land Biomes

4. The variety of life that exists within an ecosystem
6. Number of major land biomes on Earth
7. Biomes that receive very little rain and are typically hot during the day but cold at night.
9. A type of forest biome that consists mainly of cone-bearing evergreen trees and has thin, acidic soil
10. Areas classified as the same biome have similar _______ and organisms.
11. Most common forest ecosystems in the United States
12. Layer of permanently frozen soil in the tundra that prevents deep growth of plant roots
13. All of the nonliving parts of an ecosystem that help the living parts survive
14. A cold, dry, treeless biome that is characterized by a limited growing season and permafrost

1. A geographic area on Earth that contains ecosystems with similar biotic and abiotic features
2. Regions of Earth between the tropics and polar circles are __________ regions.
3. All of the living or once-living parts of an ecosystem
5. Also called meadows, prairies, and savannas and have deep, fertile soil that supports plant growth
8. The biotic and abiotic parts of the environment make up a _____________.
9. Type of rain forests that receive large amounts of rain and have dense growths of tall, leafy trees