Across
- 3. ________ footprint
- 5. the state of the atmosphere at a particular place
- 6. clearing of trees
- 8. a colourless, odourless flammable gas which is the main constituent of natural gas
- 10. remains of plants and animals that are stored underground in the form of coal (2 words)
- 13. the pattern of weather over a 30 year period
- 14. energy collected directly from the sun
- 15. plant matter that is burnt to create engery
Down
- 1. the act or process of evaporating
- 2. subset of renewable energy (2 words)
- 4. Dendrochronology is the study of __________ (2 words)
- 7. a form of energy resulting from the existence of charged particles
- 9. a biological community of interacting organisms and their physical environment
- 11. the production and discharge of something, especially gas or radiation
- 12. ________ warming
- 16. the tilt of earths ______