Across
- 3. "equal night"
- 6. warming the Earth
- 8. 365 days
- 10. cold or warm stream of seawater
- 11. water in the desert
- 12. physical characteristics of the surface of the land
- 13. major type of ecological community
- 14. windless area near the Equator
- 15. June 21 and December 22
Down
- 1. prevailing winds caused by the Earth’s rotation
- 2. continuous daylight
- 4. condition of the atmosphere in one place over a short period of time
- 5. runs from the North Pole to the South Pole
- 7. pattern of ocean currents and water temperatures in the mid-Pacific region
- 9. permanently frozen layer
- 10. average weather conditions as measured over many years