Across
- 4. something that has a negative effect
- 7. changes in the earth's weather, temperatures as a result of carbon emissions (two words)
- 8. heat being trapped in the atmosphere between the earth and space
- 11. to help people know about a particular problem (two words)
- 12. when ice becomes water
Down
- 1. how much carbon dioxide that someone or something produces (two words)
- 2. when something has the `possibility to cause danger
- 3. a long period of time with no rain
- 5. getting rid of rubbish or unwanted material (two words)
- 6. when rivers and/or lakes grow too much and water covers the land
- 9. dirty water that leaves buildings
- 10. fuel coal, oil and natural gas are types of ... ?