Why doesn't ice melt happen in a gradual and linear process?

claimed that ice at the poles does not melt in a gradual and linear fashion, but that another according to the geological record, the ice sheets can suddenly destabilize when a certain threshold is exceeded. Sea level rise due to the collapse of an ice sheet would be distributed non-uniformly across the globe.

this is false

explanation:

answer(c) carved on a babylonian clay tablet that showed earth as a flat circular disk;