Across
- 2. Suggests colder conditions
- 4. Reconstruct climate factors
- 6. Weather during Ice Ages
- 7. Removing trees for wrong reasons
- 9. A sudden or gradual ____ in Earth's climate
- 11. Variations impact climate
- 12. Variations impact climate
- 13. Burning fossil fuels and producing materials
Down
- 1. Water vapor, carbon dioxide, methane, and nitrous oxide
- 3. Raising livestock, feed, and waste
- 5. Absorbs a lot of carbon dioxide
- 8. Regulated by greenhouse gasses
- 10. Indicates organisms of the past