Across
- 2. Energy derived from natural sources that are constantly replenished.
- 6. Something involving the use of natural products and energy in a way that does not harm the environment.
- 8. A panel designed to absorb the sun's rays as a source of energy for generating electricity
- 11. A change in global or regional climate patterns
- 12. Resources that exist on the planet independent of human actions. They derive from nature
Down
- 1. Machine that converts kinetic energy from the wind into electricity
- 3. Challenges and problems facing Earth and its natural ecosystems
- 4. Gases that prevent heat from the earth escaping into space, causing the greenhouse effect.
- 5. physical injury
- 7. The process of reusing materials that would otherwise be thrown away.
- 9. Cutting down trees in a large area
- 10. Gradual increase in the overall temperature of the earth's atmosphere