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Across 1. Type of pollution where the source is singular (only 1 source) and can be tracked 3. Ability of water to flow 10. An area that is drained by a river or stream system 12. Storage area in the ground for water 13. Wetlands help trap the spread of this 14. 97% of Earth's water is this (type) 15. 3% of Earth's water is this (type) 16. A flat area that drains into a river 18. An input of water (what comes in) that moves below the surface 21. Areas with woody plants 23. Water that leaves an area (the output) 25. Land that is covered with freshwater at least part of the year

Down 2. Process of cutting off the oxygen supply in water 4. Changes in rivers depend on this 5. Top level of the aquifer 6. Rivers that are U-shaped and have little erosion 7. 8% of our water is used for this 8. Rivers that have weathered rocks and are slower moving (but not boring) 9. The most common use for global water 11. Areas with non-woody plants 17. Determines how much water an area can hold 19. Rivers that are V-shaped and fast moving 20. What the river carries in the water 22. The part of a river eroded (covered) by water 24. The shoreline where we stand