Figure21.19: AgriculturalWasteWater: ADeadZoneisalargeareaofwaterwherefertilizer
runoff pollutes farms and yards, ultimately killing off aquatic life. The size of the dead zone
in the Gulf of Mexico varies at different times of the year. ( 13 )
marvins-underground-k-12
(Marvins-Underground-K-12)
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