Overview The ocean is the ultimate sink for anthropogenic pollution. According to the HydroSHED model, over 80 percent of the land mass on Earth is in a watershed that drains directly to the ocean (Lehner and Grill 2013). Until recently, the ocean seemed to be endlessly able to absorb all the waste that human activity has discharged into it. The Ocean Health Index (OHI) scores the health of the ........
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