Human Impacts on the Environment

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Across
  1. 4. A resource that cannot be quickly replaced and takes millions of years to form
  2. 5. The trapping of heat in Earth's atmosphere by certain gases
  3. 7. A fossil fuel formed from ancient plant material; burned for energy
  4. 9. Used water from homes or industries that contains waste or pollutants
  5. 10. A thick, hazy form of air pollution caused by sunlight reacting with pollutants
  6. 11. The process of removing minerals from the Earth, often damaging habitats
  7. 12. A resource that can be naturally replaced in a short period of time
  8. 16. The variety of life in a particular habitat or on Earth
  9. 17. The large-scale clearing of forests, often for farming or development
  10. 18. When fertile land turns into desert due to drought or poor land use
  11. 20. A nonrenewable energy source made from ancient plants and animals
  12. 21. A species brought into a new area by humans, on purpose or by accident
  13. 22. Breaking a habitat into smaller, isolated pieces
  14. 23. Pollution that comes from a single, specific location
Down
  1. 1. Using resources in a way that meets needs without harming the future
  2. 2. A non-native species that spreads quickly and harms local ecosystems
  3. 3. The removal of topsoil by wind, water, or human activity
  4. 6. The destruction or alteration of environments where species live
  5. 8. Harmful substances introduced into the environment
  6. 13. Pollution that comes from many widespread sources
  7. 14. Removing natural resources faster than they can be replaced
  8. 15. Gases like carbon dioxide that trap heat in the atmosphere
  9. 19. Rain made acidic by air pollution, damaging to plants and water