The environment

5. a measurement of the amount of CO2 a person adds to the atmosphere
6. global changes in temperature, wind patterns, rainfall
8. to make something new from materials that have been used before
9. the contamination of the environment
10. a gas in the atmosphere that stops heat from escaping into space
11. a thick dirty cloud at ground level caused by pollutants reacting to sunglight

1. Higher air and sea temperatures partly caused by man-made increases in greenhouse-gas levels wildlife animals, birds, insects living naturally in the wild
2. a forestry or logging practice in which most or all trees in an area are cut down
3. the planting of trees and plants to help a damaged or destroyed forest recover
4. rubbish or garbage from a house or apartment
7. a fuel like oil or coal formed from very old plant and animal fossils