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Water Resources U1L3

Crossword hints:
Where the majority of Earth%27s freshwater is found, A heavy metal that can cause aquatic organisms to become sick or die. , This is a man-made structure that alters water and sediment distribution. It is also known as a levee, Along with overuse, the other biggest problem associated with water, One way to reduce water pollution is to use ______ fertilizer,

Crossword words:
MERCURY, POLLUTION, GLACIERS, DAMS,