Across
- 2. Geographic area where plants, animals, and other organisms, work together to form a bubble of life
- 3. The natural interconnection of food chains
- 5. Set of principles focused on waste reduction
- 9. Chemicals that can be found in organsims, but should not normally be there
- 10. International Union for Conservation of Nature
Down
- 1. An infectious disease that is transmitted between species from animals to humans
- 4. The ecosystems capacity to produce biological materials used by people and to absorb waste material
- 6. The way a system in nature helps itself
- 7. No longer in existence
- 8. Water, carbon, nitrogen and phosphorus cycles