Across
- 2. the month of Earth Day
- 3. the general weather conditions usually found in a particular place.
- 6. describes a type of petrol that does not contain lead.
- 8. sources of energy such as wind and sun
- 9. to collect and treat rubbish to produce useful materials,
- 10. the process by which land changes into desert.
- 11. damage caused to water, air.... by harmful substances or waste.
Down
- 1. animals and plants and their habitats
- 4. birds/plants/species animals or plants which may soon not exist because there are very few now alive.
- 5. warming a gradual increase in world temperatures caused by pollution
- 7. the air, water and land in or on which people, animals and plants live.