There is a lot of salt on the Earth, and it mixes very well with water.
There is some salt in all water. Water on the land runs into lakes and rivers. The water from most lakes goes into rivers. These rivers run into the seas and oceans. They carry a little salt with them.
Some of the ocean water moves into the air and clouds. It evaporates. Salt can't evaporate. It stays in the ocean.
The water in the oceans has more salt than the water in the rivers. Ocean water is about 3. 5% salt. Some seas have more salt than others.
Some lakes don't have a river to carry the water and salt away. Some of the water evaporates, but the salt cannot. These lakes are very salty. There are two well﹣known lakes like this. They are the Dead sea in the Middle East and the Great Salt Lake in the state of Utah in the United States.
They are much saltier than the Atlantic Ocean and the Pacific Ocean.
