Environmental Systems Crossword #2

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Across
  1. 7. – The spread of desert-like conditions.
  2. 10. – Excess nutrients in water causing algae growth.
  3. 11. – Water vapor cooling to form clouds.
  4. 13. – Using resources in a way that meets needs without harming the future.
  5. 15. Change – Long-term changes in temperature and weather patterns.
  6. 16. – Average weather of a region over long periods.
  7. 18. – Reusing materials to reduce waste.
  8. 20. – Large-scale cutting down of forests.
  9. 22. Power – Energy from the sun.
  10. 23. Rain – Rain mixed with sulfur or nitrogen pollutants.
  11. 27. – The permanent disappearance of a species.
  12. 29. – Day-to-day atmospheric conditions.
  13. 30. – Species at risk of becoming extinct.
Down
  1. 1. – Protecting and preserving natural resources.
  2. 2. – Catching fish faster than they can reproduce.
  3. 3. Layer – Layer of atmosphere that protects from UV radiation.
  4. 4. Warming – Rise in Earth’s average temperature.
  5. 5. Effect – Trapping of heat in Earth’s atmosphere by gases.
  6. 6. Power – Energy made by moving air.
  7. 8. – Contamination of air, water, or soil.
  8. 9. Fuel – Energy source made from ancient plants and animals.
  9. 12. – Water flowing over land into rivers, lakes, or oceans.
  10. 14. – Water soaking into the ground.
  11. 17. – Rain, snow, sleet, or hail falling to Earth.
  12. 19. – Water stored beneath Earth’s surface.
  13. 21. – Energy from moving water.
  14. 24. – Energy from heat inside the Earth.
  15. 25. Species – Non-native species that harms ecosystems.
  16. 26. Resource – A resource that can be replaced naturally (like solar energy).
  17. 28. Resource – A resource that cannot be replaced quickly (like fossil fuels).