• Lakes are important habitats for lots of plants and animals.
  • The slow motions of the water are easier for organisms to live in than the water from rapidly moving streams.
  • Most lakes have freshwater, but a few are salty.
  • Crater lakes form when volcanic eruptions create craters that fill with water.
  • Lake Superior has a tide that rises and falls several centimeters each day.
  • In the winter, a large amount of snow may fall downwind of the relatively warm lakes.
  • The Great Lakes are home to countless species of fish and wildlife.
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