Even though desalination is expensive harmful and takes too much energy, we still use it. Why?

a  solution  is always transparent, light passes through with no scattering from solute particles which are molecule in size. the  solution  is homogeneous and does not settle out. a colloid is intermediate between asolution  and a  suspension. while asuspension  will separate out a colloid will not.

it should have an internal chamber and two thermometers sticking out of the top. the internal chamber will also be closed off from the outside.