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Aquatic Ecosystems (Lakes and Ponds (-When a low place in the land fills…
Aquatic Ecosystems
Lakes and Ponds
-When a low place in the land fills with rainwater, snowmelt, or water from a overflowing stream, a lake or pond might form.
-Pond or lake that hardly moves...
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Fertilizer-filled runoff from farms and lawns, as well as sewage dumped into the water, can lead to excessive pollution
Rivers and Streams
Naturally fast-flowing streams usually have clearer water and higher oxygen content than slow-flowing streams
-Most nutrients that support life in flowing-water ecosystems are washed into the water from land
-In areas where the water movement slows, such as in the pools of streams or in large rivers, debris settles to the bottom
-These environments tend to have higher nutrients levels
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Human Impact
Once regarded as a free place to dump sewage and other pollutants, many people now recognize the damage this causes
Freshwater
Water temperatures, the amount of sunlight present and the amounts of dissolved oxygen and salt in the water are important