Across
- 2. This type of renewable energy source comes from the Earth's core
- 5. The movement of carbon, in its many forms, between the atmosphere, oceans, biosphere and geosphere
- 10. Humans breathe in this gas
- 11. Acronym for the Environmental Protection Agency
- 13. One of the most abundant greenhouse gasses
- 14. Greenhouses gases regulate the temperature of Earth’s atmosphere via the _________________
- 15. Formed from ferns, plants, and trees which hardened due to pressure and heat
Down
- 1. These gases trap heat in the lower atmosphere
- 3. Plants do this to create food
- 4. This type of energy can never run out (ex. solar and wind)
- 6. The average weather conditions over a 30 year period
- 7. Heat (thermal) long wave radiation
- 8. These are burned to create energy, they are non-renewable
- 9. The most abundant atmospheric gas
- 12. This type of carbon cycle operates on a timescale of thousands of years