Across
- 2. Something thrown away as rubbish.
- 7. A place where animals or plants are protected.
- 9. warming The warming of Earth's temperature.
- 10. Natural world surrounding us.
- 12. Protect, maintain and preserve nature.
Down
- 1. Materials that can be reprocessed and used again.
- 3. Disappearing species due to human activity.
- 4. Harmful smoke or chemicals released into the air.
- 5. Waste separation process into paper, plastic, glass, etc.
- 6. Trees produce this clean air for humans.
- 8. energy Energy from the sun, wind or water.
- 11. To save energy by using less water, electricity, etc.