Forces of Nature

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Across
  1. 4. Process converting sunlight into chemical energy.
  2. 6. Material settles after being transported by wind or water.
  3. 9. Permanently frozen ground in Arctic regions.
  4. 12. Rotating storm system formed in low-pressure areas.
  5. 13. Study of Earth's crust movement and formation.
  6. 14. Natural progression of species in an ecosystem.
  7. 15. Measure of reflectivity of Earth's surface.
Down
  1. 1. Wearing away of earth by wind or water.
  2. 2. Decomposer organism, often living in symbiosis.
  3. 3. Rain, snow, or sleet falling from the sky.
  4. 5. Liquid turns into vapor due to heat.
  5. 7. Variety of life in ecosystems.
  6. 8. Heat transfer through fluid movement.
  7. 10. Large community of flora and fauna in specific environments.
  8. 11. Area draining into a river or lake.