Summary:
- 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.