Chapter 3 - Communities & Biomes

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Across
  1. 4. biomes found in water
  2. 7. the process of gradual, natural change and species replacement in an ecosystem
  3. 9. tiny organisms that drift in the photic zone of aquatic biomes
  4. 11. the first species to live in a new area of land
  5. 12. just south of the tundra; a continuous tree line provides much of the earth's oxygen
  6. 13. type of succession that takes place on land where there are no living organisms
  7. 14. biome found only near the equator; warm temperatures and an abundance of rain provide lush plant growth
  8. 16. the ability of living things to survive the changes in their environment
  9. 17. biome with rich soil and grasses; known as breadbaskets
  10. 18. area where freshwater rivers meet saltwater ocean
  11. 19. treeless biome with long summer days and totally dark winters; permafrost is two meters below the surface
Down
  1. 1. a stable community that undergoes little change
  2. 2. part of the marine biome that is shallow enough for sunlight to penetrate
  3. 3. arid region with sparse plant life; the driest biome
  4. 5. group of abiotic factors that include humidity, temperature, amount of precipitation, etc.
  5. 6. zone of the shoreline between high and low tide lines
  6. 7. type of succession that happens after land has been disturbed but not destroyed
  7. 8. trees that lose their leaves in the winter in order to conserve water
  8. 10. any factor that affects an organisms ability to survive and the size of its population
  9. 15. biomes found on land