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… in balance, such as climate regulation, flood control, disease regulation and water purification; • Cultural … and feedlots, combined with use of antibiotics to prevent disease at high stocking levels, hormones to increase growth … other chemicals that are used to keep farmed fish free of disease and parasites can contaminate the natural ecosystem, …

… activities (preventive measures associated with unusual disease threats). Public use monitoring activities put park …

… prevalence of violent crime, petty theft, water quality, disease or bad sanitation. Dramatic differences exist between …