Biology Chapter 3

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Across
  1. 5. microscopic organisms that live in aquatic environments
  2. 6. ecosystem in which water either covers the soil or is present near the surface
  3. 7. all organisms that live in a place with their nonliving environment
  4. 9. different populations that live together in an area
  5. 11. all of the water above and below Earth's surface
  6. 12. study of interactions among organisms
  7. 13. material formed from decaying leaves and other organic matter
  8. 15. day-to-day conditions of the atmosphere
  9. 16. layer of permanently frozen subsoil found in the tundra
  10. 17. average year-to-year conditions of temperature, etc.
Down
  1. 1. part of Earth where life exists
  2. 2. group of similar organisms that can breed and produce offspring
  3. 3. layer in a rain forest found underneath the canopy
  4. 4. biome with long cold winters and a few months of warm weather
  5. 8. group of ecosystems that share similar climates
  6. 9. dense covering formed by the leafy tops of tall trees
  7. 10. all of the rock at and below Earth's surface
  8. 12. kind of wetland formed where a river meets the ocean
  9. 14. groups of individuals of the same species that live in the same area
  10. 18. thin layer of gases that surround Earth