| http://www.w3.org/ns/prov#value | - Hypoxic (very low oxygen) and anoxic (no oxygen) zones are caused by excessive nutrient pollution, often from human activities such as agriculture, which results in insufficient oxygen to support most marine life in near-bottom waters. ??????the growing dead zones in the Chesapeake Bay are the direct result of inadequate water filtration ??? a job that was once carried out by menhaden,??? noted au
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