"river basin crossword puzzle ": HTML5 Crossword

Across

4. 13. animal that lacks a backbone and is visible to the naked eye (0,17)
6. 14. open space or connector along a natural corridor (such as a river) used for parks and trails (0,8)
10. 9. discharge entering a stream at a specific, detectable point such as a pipe or outfall (0,5,6,9)
13. 4. the water found in cracks and pores in sand, gravel and rocks below the earth’s surface (0,11)
15. 5. a natural system linked by living (plants, animals) and nonliving (soil, air, water) things. (0,9)

Down

1. 8. eroded soil particles that wash or blow into rivers (0,8)
2. 15. a porous rock layer underground that is a reservoir for water (0,7)
3. 3. all the land drained by a river, stream or lake (0,9)
5. 6. the amount of land and water needed to support one’s lifestyle using current technology (0,10,9)
7. 10.: diffuse runoff from large areas of land (0,8,6,9)
8. 12. surplus water from rain and melted snow (0,10)
9. 11. rapid, dense growth of algae that robs the water of oxygen as it dies and decomposes (0,5,5)
11. 1. drainage area of a river (0,5,5)
12. 2. a semien closed area where fresh water from a river meets salty water from the sea (0,7)
14. 7. : pertaining to the edges of streams or rivers (0,8)