It is a hot day outside and you decided to get a nice cup of lemonade with ice in it. You will notice that the longer the ice is in the glass it begins to melt. This is because liquids freeze at 0 degrees Celsius. When ice is exposed to a temperature above 0 degrees it begins to melt.
1 Additional Answer
Ice like all things have a melting point. Some things have a high melting point like steel or rocks. On the other hand ice has a low melting point witch is the temperature in which a item or element melts into a liquid.
The retreat of glaciers since 1850 affects the availability of fresh water for irrigation and domestic use, mountain recreation, animals and plants that depend on glacier-melt, and in the longer term,...