Drinking,.cooking and washing anything including yourself
fresh water doesnt have saltinity in it but, ocean water does.
Fresh and salt water are very different for one key reason, fresh water doesn't contain salt and salt water obviously does. There are different flora and fauna in fresh and salt water for this reason.
Salt water has salt water in it and is bad for you, fresh water has no salt water in it and is good for you.
There are many different catfish species, salt water and fresh water.
write five uses of fresh water
Salt water contain dissolved sodium chloride; chemical and physical properties are different compared with fresh water.
Ocean water contains salt and fresh water does not. Also, the two types of water are filled with a different variety of animals, both visable and microscopic.
The fresh water in Greenland and in Antarctica is all stored as ice, making it mostly inaccessible for casual fresh-water use.
87% of the world's fresh water supply is used in agriculture -- mostly to water crops.
Drink
Fresh water contains no sign of salt, while on the other hand salt water contains salt
Sea water is denser, not only that, different oceans have different densities.