Across
- 2. _______ is the long-term heating of Earth's climate due to human activities.
- 6. _______ is the day-to-day state of the atmosphere.
- 7. ___________ is the water that falls to the Earth.
- 8. _______ is the average condition for about thirty years.
- 9. _______ fuels
- 10. An _________ is a community of interacting organisms and their environment.
Down
- 1. A _______ is a place that an animal lives.
- 3. _______ is the layer of gas that surrounds Earth. It is often called air.
- 4. _______ is a natural process that warms the Earth's surface.
- 5. CO2