Whats the purpose of water melting in water?

Answer 1

There is no purpose of water melting in water. It makes no sense. If you meant to ask what is the effect of ice melting in water, I can only assume you mean what's the big deal about the polar ice caps (water) melting into the ocean (water)? Well, I guess if you live in Denver, which is 5000 feet above sea level, then the effect on you is nothing. On the other hand, if you live on a pacific island that is two feet above sea level, and that sea level rises by 3 feet because of all the extra water from the polar ice melt, well you're going to have a hard time of it. There are many places like London and New York and much of Holland that would be devastated by such a rise in water level.