| http://www.w3.org/ns/prov#value | - Lawns are a significant factor in causing local, regional and national environmental problems ranging from algae blooms and degraded water quality in the neighborhood detention pond, to accelerated aging of ponds and lakes, to reduced clarity of streams and loss of fish habitat, to increased flooding, and finally the vast dead zone that has developed at the mouth of the Mississippi River in the Gu
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