Very hot.
Direct sunlight continuously on the pond.
Regular water evaporates faster because salt or any kind of solute (the substance that dissolves) raises the boiling point and lowers the freezing point.
It does not matter what the material dissolved in water. The only thing that matters is how much is dissolved. So neither.
the wet kind
sedimentary
A very impure water is evaporated slower.
Evaporation is a physical process.
Differences are not significant.
salt water and tap water
Yes and no. Yes because it does keep its form kind of when it evaporates. All that happenes is that it just turnes into a less dense form. Then no because when it evaporates it is a gas until it changes again.
The sediment is a mixture of sand, soil, salts, detritus.
Water remain water, only the state of matter is changed from liquid to solid.
Sodium chloride and other chlorides remain as a residue.