"river basin crossword puzzle ": HTML5 Crossword

Across

2. 11. rapid, dense growth of algae that robs the water of oxygen as it dies and decomposes (0,5,5)
9. 10.: diffuse runoff from large areas of land (0,8,6,9)
13. 13. animal that lacks a backbone and is visible to the naked eye (0,17)
14. 2. a semien closed area where fresh water from a river meets salty water from the sea (0,7)
15. 5. a natural system linked by living (plants, animals) and nonliving (soil, air, water) things. (0,9)

Down

1. 9. discharge entering a stream at a specific, detectable point such as a pipe or outfall (0,5,6,9)
3. 8. eroded soil particles that wash or blow into rivers (0,8)
4. 6. the amount of land and water needed to support one’s lifestyle using current technology (0,10,9)
5. 7. : pertaining to the edges of streams or rivers (0,8)
6. 14. open space or connector along a natural corridor (such as a river) used for parks and trails (0,8)
7. 4. the water found in cracks and pores in sand, gravel and rocks below the earth’s surface (0,11)
8. 12. surplus water from rain and melted snow (0,10)
10. 1. drainage area of a river (0,5,5)
11. 15. a porous rock layer underground that is a reservoir for water (0,7)
12. 3. all the land drained by a river, stream or lake (0,9)