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Saltwater and freshwater portions of the biosphere that can support life
The two major types of aquatic life zone
Lakes, rivers, streams, and inland wetlands
Type of organism that is weakly swimming and free-floating
Strongly swimming consumers such as fish and turtles
Bottom-dwellers (oysters and sea stars)
Break down organic compounds in the dead bodies and wastes of aquatic organisms into nutrients that aquatic primary producers can use.
Cloudiness that can occur naturally (algal growth)
Warm nutrient-rich, shallow water that extends from the high-tide mark on land to the gently sloping, shallow edge of the continental shelf.
Submerged part of continents
Where rivers meet the sea
Coastal land areas covered with water all or part of the year
Area of the shoreline between low and high tides.
The increase in water depth at the edge of the continental shelf seperates the coastal zone from this
Take mud through their guts and extract nutrients
Pass water through or over their bodies and extract nutrients
Lakes with small supply of plant nutrients
The open sunlit surface layer away from the shore that extends to the depth penetrated by the sunlight
A lake with a large supply of nutrients needed by producers
Human inputs of nutrients from the atmosphere and from nearby urban and agricultural areas can accelerate the eutrophication of lakes
The middle of the two extremes of nutrient enrichment
Precipitation that does not sink into the ground or evaporate
When surface water runs into streams
The land area the delivers runoff, sediment and dissolved substances to a stream
Lands located away from coastal areas that are covered with freshwater all or part of the time
Remain under water or are soggy for only a short part of the year
An area at the mouth of a river that was built up by deposited sediments and contains coastal wetlands and estuaries
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