Across
- 4. Asia - stretching among six countries
- 6. located in northeastern Africa and flows from south to north, emptying into the Mediterranean Sea in Egypt
- 8. between the continents of Asia and Australia to the west, and North and South America to the east
- 9. in North Africa
Down
- 1. soaring heights, steep-sided jagged peaks, valley and alpine glacier
- 2. Located in Antarctica
- 3. dry area of land that receives less than 10 inches (25 centimeters) of rain per year.
- 5. contain annual layers that hold a unique and valuable record of Earth's climate history
- 7. size, marine life, and economic importance
- 10. critical to the development of ancient Egypt, providing water for crops and supporting the growth of a civilization.