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There are many lakes on earth. Some are The Great Lakes, Lake Victoria, and The Great Salt Lake.
No, most lakes contain fresh water, not salt. Some salt lakes do exist.
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Cichlids are from rivers and lakes in South America and Africa, so they are Fresh Water fish.
Salt lakes exist around the world in all continents.
Some lakes contain a great amount of salt; salt without salt have a drain.
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Some do, it depends on the type of lake that it is. There are freshwater lakes, and salt water lakes!
Yes, many rivers are navigable in Africa. It also has many very large lakes that people travel on.
There are more than 4 great lakes in Africa. These are the ones I have found.Lake_VictoriaLake_TanganyikaLake_MalawiLake_TurkanaLake_Albert_(Africa)Lake_KivuLake_Edward
Some lakes, such as the Great Salt Lake in Utah, are salty. The Great Lakes are freshwater because there is no source of salt to supply them.