Across
- 3. Coal, oil, and natural gas
- 5. Long period with little or no rain
- 7. Energy from the sun
- 9. Energy from natural sources like sun or wind
- 12. Measure of heat in the environment
- 13. Release of gases into the air
- 15. Height of the ocean’s surface
- 16. Element released by burning fuels
- 17. Increase in Earth’s average temperature
Down
- 1. Ice turning into water due to heat
- 2. Harmful substances in the environment
- 4. Protecting resources for future generations
- 6. Gases that trap heat in the atmosphere
- 8. Energy generated from moving air
- 10. Cutting down large numbers of trees
- 11. Long-term shifts in weather patterns
- 14. Overflow of water onto land