Is the global warming just a prediction or an actual fact?

Global warming is a grim fact.Whether it was predicted or not is immaterial to the factuality of the phenomenom because we must worry about facts while we need not worry about predictions.

An ozone layer in our atmosphere above is depleted by some gases CF4[Crabon teteraflouride emitted by refrigerators as well as other combusting industries.They protect the atmosphere from increase in temperatures and when depleted the temp rises above a normal level leading to drying up of waters as wellas even underground water.