Across
- 2. Part of an ocean or sea extending into the land.
- 4. A river and its tributaries
- 5. Resources that can be replaced as they are used up
- 8. Water in the form of rain, sleet, or snow that falls to Earth’s surface
- 10. The place where a river empties into a larger body of water: end.
- 11. Early family members
- 12. The triangle-shaped land at a river’s mouth.
- 14. Plain Low land that lies along an ocean or other large body of water.
- 17. Resources that once they are used up, they are gone forever
- 18. The place where a river begins.
- 19. The water beneath the Earth’s surface.
- 20. A deep, narrow valley with steep sides.
Down
- 1. The kind of weather a place has over a long time
- 3. A natural substance found in rocks
- 6. One of the shapes that make up Earth’s surface.
- 7. Land that is almost entirely surrounded by water.
- 9. The largest land areas on Earth.
- 13. The wearing away of the Earth’s surface
- 15. A natural resource that is used to make heat or energy
- 16. Protecting natural resources and using them wisely