Across
- 3. Knowing, informed about problems or factd
- 4. Very precious, important and useful
- 5. Long-term changes in Earth's weather patterns
- 8. Exhaustion of natural resources
- 11. Complete disappearance of animal species from the face of the Earth
- 12. No longer existing; a species that does not exist anymore
Down
- 1. Hazardous waste produced by nuclear plants
- 2. Unwanted or discarded materials
- 6. Excessive use of resources, often leading to their exhaustion
- 7. Contamination of the environment by harmful substances
- 9. The variety of life in all its forms and interactions
- 10. Large-scale loss of forest cover