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