1.The____zone is the region of no light in the aquatic environment.
2. A surface feature formed when a stream cuts into a steep slope.
3.A curve that is formed when a river turns and curves as it moves.
4. A body of fast-moving water passing along a narrow channel.
5. water that continues to flow and does not soak into the ground.
6. the____of the land affects the amount of runoff water.
7. they may form when water does not soak immediately underground.
8. the region in the aquatic environment where light can penetrate.
9. the movements of water on the surface of seas and oceans are called water_____.
11. a large body of slow-moving water is called a______.​