Across
- 4. Energy from moving water
- 5. Variety of life on Earth
- 6. Heating of Earth due to trapped gases
- 10. A layer of gases surrounding Earth
- 11. The study of interactions between living things and their environment
- 12. A type of energy from the sun
- 13. Materials that come from nature
- 15. Cutting down trees on a large scale
- 18. Harmful substances in the air, water, or soil
- 20. The natural world, including air, land, and water
- 21. When Earth’s climate changes significantly
- 22. Precipitation with acidic components
- 25. The 3Rs stand for Reduce, Reuse, and…?
- 28. The process of breaking down waste naturally
Down
- 1. A method of reducing solid waste
- 2. The layer where all life exists
- 3. it has space and mass
- 7. Wastes from computers or phones
- 8. A fuel formed from dead plants and animals
- 9. Gas plants use to make food
- 14. Resource that cannot be replenished quickly
- 16. Earth’s protective layer from UV rays
- 17. Noise pollution affects this sense
- 19. Excessive or harmful sound
- 21. Practice of using resources wisely
- 23. The gradual increase in Earth’s temperature
- 24. Reusing materials to reduce waste
- 26. Planting trees to replace cut ones
- 27. Energy from moving air
- 29. A serious result of climate change – sea levels do this