Across
- 2. energy cannot be created nor destroyed but instead ___.
- 4. one component in how nuclear energy is harnessed
- 6. what you should do with water
- 9. Greta ___, child activist who addressed the UN when she was 15.
- 10. mechanical, chemical, thermal, electrical, ___.
- 11. why some resources are better than others
Down
- 1. machine that creates energy from wind power.
- 3. main source of energy for the earth
- 5. ex., what coal is
- 7. sun's uneven heating causes...
- 8. how nonrenewable resources are often harnessed