Across
- 1. Fossil fuel used for heating and electricity
- 5. Using resources in a way that preserves them for the future
- 6. Energy produced by movement of ocean surface water
- 8. Amount of greenhouse gases produced by human activities
- 11. Reusing materials instead of throwing them away
- 14. Resources that can be naturally replaced over time
- 18. Organic material from plants and animals used as energy
- 19. Protecting and managing natural resources carefully
- 20. Energy produced from heat inside the Earth
- 21. A natural resource essential for all living things and part of the water cycle
- 22. Liquid fossil fuel used for energy and transportation
- 23. Large area covered chiefly with trees and wildlife
- 24. Electricity generated using moving water
Down
- 2. Mixture of gases that living things need to survive
- 3. Energy that comes from the sun and can be used to generate solar power
- 4. Non-renewable energy sources like coal, oil, and gas
- 6. Moving air used to produce renewable energy
- 7. Natural world around us, including air, water, and land
- 9. A community of living things interacting with their environment
- 10. Variety of living organisms in an area
- 12. Energy created from ocean tides
- 13. Materials or substances that occur naturally in the environment
- 15. Naturally occurring solid substances found in the Earth
- 16. Upper layer of earth where plants grow and nutrients are found
- 17. A fossil fuel formed from ancient plant remains