Across
- 3. states that older rocks and fossils are found deeper into the ground
- 4. this is another word for farming and can produce lots of greenhouse gases
- 5. a period or time in which the dinosaurs lived
- 7. a greenhouse gas that cattle produces
- 9. we breathe it out trees use it to make oxygen and too much of it is bad for the climate
- 10. a supercontinent
Down
- 1. a species that went extinct a long time ago
- 2. clearing or forest
- 6. a type of rock formed from weathering and erosion
- 8. it is a liquid rock that is hot under the ground