Across
- 4. viscous liquid derived from petroleum, especially for use as a fuel or lubricant
- 5. a change in global or regional climate patterns
- 7. a fossil energy source that formed deep beneath the earth's surface
Down
- 1. long-term heating of Earth's climate system observed since the pre-industrial period
- 2. organic matter used as a fuel
- 3. relating to or determined by the sun
- 5. combustible black or dark brown rock consisting mainly of carbonized plant matter
- 6. the perceptible natural movement of the air