Decalination removes salt and other solutes, leaving fresh water.
An energy-intensive way is to boil the water, and condense the steam.
Possibly cheaper is to use materials such as semipermeable membranes to filter out the solutes, such as salt in salt water or brackish water. This is the process of osmosis. However, the membranes may not function indefinitely without replacement.
Many microorganisms are found naturally in fresh and saltwater.
Tap water is fresh water. The phrase "fresh water" refers to water with very little or no salt in it (as opposed to salt water, such as is found in oceans). Tap water contains little or no salt, and is therefore fresh water.
Swamps are made of both.
Ice caps are made of fresh water. When this ice melts into the ocean, it contributes to the salinity of the water in that area.
Water fresh water or salt water
Salt water has a higher density than fresh water. Fresh water is only made up of two things, hydrogen and oxygen. Salt water is made up of hydrogen oxygen sodium and chlorine, which gives it a higher density.
It's not the color that is significant, its the fresh water that the ice cubes were made with. Salt water is heavier than fresh water so the fresh water floats a top the salt water.
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.
on fresh salt water
Salt water is water that has salt in it and it is found in oceans. Fresh water does not have salt and is found in rivers and lakes.
The great Mississippi river is made entirely of fresh water.
Fresh water occurs in rivers, lakes, and ponds, and falls as rain. It is fresh in the sense that it is not salt water (sea water).