There'll be a decrease in health risks and problems, for one.
Who doesn't drink enough water so the salt of the food will be stored in human body causing many health problems
Quite a bit of heat and pressure is needed to change an igneous/sedimentary rock to a metamorphic
Three ways I can come up with are increasing the temperature, increased the amount of solvent, and using a solvent with similar polarity as the solute.
The Earth is 92.96 million miles away from the sun :)
