| http://www.w3.org/ns/prov#value | - The EPA has acknowledged the ongoing harm from acid deposition, including negative ecosystem effects in many estuaries, impairing fish production and human activities such as swimming, boating and tourism; reduced growth rates in a number of fish species, such as salmon and trout, attributed to acid stress; declines in species richness; and harm to species at the base of the food chain.
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