Asked in Global Warming
If the worlds icebergs all melted what effect would this have on our planet?
Icebergs float, so their melting will not make much difference
to sea levels. They are made of fresh water, and fresh water is
less dense than salt water, so sea levels will rise, but only
Ice caps (sitting on land) and glaciers, however, if they melt (Greenland and Antarctica) will raise sea levels by 200 feet or more (60 metres).