Across
- 2. A synonym to word "decrease"
- 4. It's used in cars to keep them moving
- 6. It's produced by organic matters
- 7. A structure built to block the flow of water
- 8. Energy coming from the sun
- 11. Rain that includes sulfuric or nitric acid
- 12. Turf; the organic matter in bogs
- 13. Machinery that drills, for example, oil and natural gas
Down
- 1. Sustainable energy forms
- 3. Shows the amount of carbon dioxide produced by one person
- 5. An artificial lake
- 9. A place where there are lots of windmills
- 10. A rechargeable item