Answer:
Law of Conservation of Energy
Explanation:
Well, the only way you would get clouds is evaporation, a liquid to a gas. (Change of matter) the clouds would not turn into rain without percipitation, gas to water. (Change of matter.)
The answer is dissolved in water, because in chemistry, (aq) is shorthand for aqueous solution.
Through the process of conduction, heat van be trnafered between two solids.