What will happen if ALL the icebergs melt!! OMG!! :S

Hey all, let us know what will happen if.. ALL THE ICEBERGS MELT!!
We all know that the earth is getting warmer. this will cause the icebergs to crack and pieces will break off! and when thet happens, the water level will rise. Scientists have predicted a sea level change by the year 2100. They estimate that the sea level will rise 50 centimeteres, on average, by that time. the rise will come from warmer sea temperatures, and from melting ice. this rise in sea level will have a dramatic effict on coastal cities and towns all over the world.