Across
- 1. a body of salt water that covers approximately 70.8% of the Earth
- 3. the natural world, as a whole or in a particular geographical area, especially as affected by human activity
- 5. a fence or other obstacle that prevents movement or access
- 6. the ability to maintain or support a process over time
- 7. the process of converting waste materials into new materials and objects, recovering energy from waste
- 8. damage caused to water, air, etc. by harmful substances or waste
Down
- 2. the process of working together to the same end
- 3. a community of living organisms (plants, animals and microbes) in a particular area
- 4. synthetic or semi-synthetic material that contributes to pollution