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