Across
- 2. – The act of making something usable again.
- 3. – A group of the same species in a specific area.
- 4. Pollution – Harmful or disturbing levels of sound.
- 6. – A potent greenhouse gas from livestock and landfills.
- 9. – A site for the disposal of waste.
- 14. – The Earth’s solid outer shell.
- 15. – Fog or haze combined with smoke and pollution.
- 16. Cycle – The continuous movement of water through Earth’s systems.
- 18. Panel – Device that converts sunlight into electricity.
- 21. – Organic material used as renewable energy.
- 23. – Process by which plants make food using sunlight.
- 25. – Chemical used to kill weeds.
- 27. – Relationship where one organism benefits, the other is unaffected.
- 28. – Meeting needs without compromising future generations.
- 30. Pollution – Heating of water by industrial processes.
- 31. – The study of interactions between organisms and their environment.
- 33. – Trait that helps a species survive in its environment.
- 36. Quality – A measure of pollutants in the atmosphere.
- 37. – An organism that makes its own food, usually a plant.
- 41. Cycle – The movement of nitrogen through ecosystems.
- 42. – Area of land saturated with water.
- 43. – All ecosystems on Earth combined.
- 44. – The solid parts of Earth including rocks and land.
- 46. – Harvesting fish faster than they can reproduce.
- 49. – A chemical or natural substance to promote plant growth.
- 50. – Movement of animals from one region to another.
Down
- 1. – Organism that breaks down dead matter.
- 5. – Chemical used to kill pests.
- 7. – The day-to-day state of the atmosphere.
- 8. Turbine – A machine that converts wind energy into power.
- 10. – Relationship where both organisms benefit.
- 11. Level – A step in a food chain or web.
- 12. – All the water on Earth’s surface.
- 13. – Decayed organic matter used as fertilizer.
- 17. Cycle – The circulation of carbon through nature.
- 19. – A man-made or natural lake used for water storage.
- 20. – The layer of gases surrounding Earth.
- 22. – An organism that eats other organisms.
- 24. Spill – Accidental release of petroleum into the environment.
- 26. Rain – Rainfall made acidic by air pollution.
- 29. – Cold, treeless biome with frozen ground.
- 32. Change – A long-term shift in global or regional climate patterns.
- 34. – Relationship where one organism benefits at the other's expense.
- 35. – A decomposer that feeds on dead matter.
- 38. – Spread of desert into non-desert areas.
- 39. – All living organisms in an area.
- 40. – Replanting trees in an area where forest was lost.
- 45. Reef – Marine ecosystem built by tiny organisms.
- 47. – Long-term patterns of temperature and weather.
- 48. Footprint – Total greenhouse gases caused by a person or activity.