Across
- 1. A scientist who studies water.
- 3. The source of a river.
- 4. The gathering of water in large amounts, like lakes or oceans.
- 7. Process where water becomes nutrient-rich, causing algal blooms.
- 9. source pollution Pollution coming from a single, identifiable source.
- 10. physiographic regions Natural areas defined by landforms and geology.
- 13. An area of land that drains into a river or stream.
- 14. use How humans use land for farming, housing, or industry.
- 17. basin Land drained by a river and its tributaries.
- 19. or ephemeral streams Streams that only flow at certain times of year.
- 21. Coastal inlets where the sea curves inward.
- 22. The wearing away of land by water, wind, or ice.
- 23. The surface features of an area of land.
Down
- 1. Related to the movement and distribution of water.
- 2. Particles of soil and rock carried by water.
- 5. surface A surface that does not allow water to pass through.
- 6. map Map showing elevation with contour lines.
- 8. Harmful substances in the environment.
- 11. Where freshwater mixes with saltwater near the coast.
- 12. Trash left in the environment.
- 15. Pipes or channels that carry away surface water.
- 16. Process plants use to make food from sunlight.
- 18. basins Low-lying drainage areas along the coast.
- 20. source pollution Pollution that comes from many widespread sources.