Earth and Environmental Science

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Across
  1. 4. A species whose decline signals the health of an ecosystem (10 letters)
  2. 5. The outer layer of the Earth, consisting of the crust and upper mantle (9 letters)
  3. 6. The process by which plants convert sunlight into energy (15 letters)
  4. 9. A type of energy that comes from the heat within the Earth (11 letters)
  5. 11. The gradual warming of Earth's atmosphere due to increased levels of carbon dioxide (14 letters)
  6. 12. A natural satellite that orbits a planet (4 letters)
  7. 13. A large, naturally occurring community of flora and fauna (7 letters)
  8. 14. The continuous movement of water on, above, and below the surface of the Earth (11 letters)
Down
  1. 1. A large-scale ecosystem defined by distinctive climate and vegetation (6 letters)
  2. 2. A non-renewable energy source made from ancient plant material (3 letters)
  3. 3. The layer of the Earth's atmosphere where weather occurs (10 letters)
  4. 7. The movement of tectonic plates causing earthquakes (11 letters)
  5. 8. A solid, natural substance made of minerals or mineraloids (4 letters)
  6. 10. The study of weather and atmospheric conditions (11 letters)