Systems Fresh water











fresh water habitats divided lentic systems, stillwaters including ponds, lakes, swamps , mires; lotic, or running-water systems; , groundwater flows in rocks , aquifers. there is, in addition, zone bridges between groundwater , lotic systems, hyporheic zone, underlies many larger rivers , can contain substantially more water seen in open channel. may in direct contact underlying underground water. majority of fresh water on earth in ice caps.







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