The polar ice caps are melting, why?

There is a possibility of melting of polar ice caps and increase in the level of sea water due to

Explain why ice has a sharp melting point where as glass melts over a range of temperature ?

Why don't polymers have a sharp melting point?

A spherical ice ball melts in such a way that the rate of melting is proportional to its volume of ice at that instant. If half the quantity of ice melts in 30 minutes, show that after 90 minutes from the start of melting, the volume of ice that remains is (1)/(8) time of the original volume of the ice ball.

The enthalpy of fusion of ice Is 1.435 kcal/mol. The molar entropy change for the melting of ice at 0^@C is

BeO is covalent but still it has high melting point- why?

If the ice at the polar regions were to melt completely, state whether the length of a day would increase or decrease.

A piece of ice with a cork in it is floating on water in a beaker. Will the level of water in the beaker change after complete melting of the ice?

A piece of ice with a stone in it is floating on water in a beaker. Will the level of water in the beaker change after complete melting of the ice?

The ionic compounds are soluble in polar solvents but isoluble in non-polar solvents-why?