Across
- 4. All living and non-living things in the environment
- 6. prevention of injury, decay, waste, or loss
- 8. Average weather conditions of a region
- 9. Lowering the amount of resources used
- 10. Contamination of air, water and land
Down
- 1. Layer of gas that shields the Earth from UV rays
- 2. Capable of being maintained for long periods of time
- 3. Produced without using synthetic materials
- 5. Fuel derived from plant and animal materials
- 7. Type of energy created from sun rays
- 9. to use again