Chapter 3: The Biosphere

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Across
  1. 2. The layer of the forest at the top (6)
  2. 5. A taiga biome is also known as the boreal (5)
  3. 7. The Earth's water in all forms (11)
  4. 11. zone The layer of water where no sunlight penetrates (9)Species
  5. 14. Zone A zone where sunlight penetrates water, allowing photosynthesis (10)
  6. 15. A biological community of interacting organisms and their physical environment (9)
  7. 17. The variety of organisms that can reproduce fertile offspring (7)
  8. 19. The Earth's weather conditions over a short period (7)
  9. 20. The thin outer layer of Earth where life exists (9)
  10. 22. An area where land is saturated with water (7)
  11. 23. A large community of plants and animals that occupy a major habitat (5)
Down
  1. 1. A biological community of interacting organisms (9)
  2. 2. The long-term average weather of an area (7)
  3. 3. The frozen ground found in polar regions (10)
  4. 4. A layer of gases surrounding Earth (9)
  5. 6. The layer of the forest that lies beneath the canopy (9)
  6. 8. Interaction of organisms and their environment (7)
  7. 9. factor A living component that affects an ecosystem (11)
  8. 10. Organic material in soil (5)
  9. 11. factor The nonliving parts of an ecosystem (12)
  10. 12. The number of individuals of a species in a given area (10)
  11. 13. Interaction of organisms and their environment (7)
  12. 16. effect A natural occurrence when certain gases trap heat in Earth’s atmosphere (17)
  13. 18. An area where freshwater meets saltwater (7)
  14. 21. Organisms that live in the water and are unable to swim against currents (7)