Because those are regions which do not receive enough
sunlight
to melt the ice.
Atop mountains at low latitudes, even permanent
ice areas
exist. Sunlight isn't the cause though, since sunlight is plentiful at low latitudes. The cause is adiabatic expansion and temperature reduction of air which rises from the sea level, and creates the colder surrounding air around the mountain top
• as permanent frost (called permafrost) Water exists in ice form as permanent frost in the North and South Poles of Mars. The big slabs of ice are called polar icecaps. • as liquid So far, no liquid water has been found anywhere on Mars.
Seasonal ice (Seasonal permafrost)
ice valcanos do exist
ice machine
Places such as most of Antarctica are covered with a permanent layer of ice. In other places, ice only forms when the temperature drops below freezing. The ice formed when this happens in non-permanent ice because it is only temporary.
its not always there
Glaciers form in areas of permanent snow, both at high ..... reductions in middle- and lower-elevation glacial ice.
Most areas of Australia have permanent drought conditions.
Antarctica's ice sheet holds about 90% of the earth's store of permanent ice.
Because in water hydrogen bonding is not permanent due to random motion where as in ice it is permanent also in ice k.e.is also lower
The summit of Mount Kilimanjaro
Permafrost