Why isn the water in the Great Lakes salty?
The Great Lakes are fed by fresh water from rains and melting snows. It runs into the lakes from countless streams and rivers. Along the way, this running and seeping water dissolves chemicals from the soil and rocks. It carries small traces of the salty chemicals we find in sea water. The huge water system drains into the sea, carrying away its small load of salts, while more ground water seeps in to fill up the lakes, Every hour, the sun evaporates tons of water from the face of the vast ocean, but the salty chemicals stay behind, Every hour, the lakes and rivers steal small loads of chemicals from the land and dump them into the sea, where they stay. The so called fresh water is always unloading its salty chemicals, while the sea is getting saltier every day.
