Global warming.
The glaciers may melt and mix with volcanic ash, forming mudflows called lahars.
Gas does not directly cause Ice to melt. However if you are talking about glaciers then the gas Carbon Dioxide (CO2) causes the earths atmosphere to heat up (because it traps more of the Sun's heat) and this causes glaciers to melt - because the Earths climate is hotter.
When glaciers form they scrape earth's surface as they advance. Also when glaciers melt it deposits the sediment it eroded from the land creating various land forms.
Global warming
glaciers weather the earths surface
Water can speed up the rate at which glaciers melt. Whether the water is acidic or not has no effect.
Water pollution is important because it kills our environment and causes global warming and make glaciers melt ,that are causing floods.
The glaciers melt due to the warmer air, causing there to be more water in the oceans. The oceans can't hold it so it floods
Melt. Move
Global
Sea or
they will melt