Dear Student
Global warming is the phenomenon of increasing temperature of earth due to release of green house gases in excess proportions . If this temperature keeps on rising then the glaciers will melt . The ice caps of Antarctic and Arctic will slowly melt causing sea level to rise .
Food supply will decrease as wildlife forests , agricultural lands will be adversely affected due to global warming .
Excess heat will also cause the ozone layer to deplete . CFC or cholorofluoro carbons lead to holes in the ozone layer .
Regards .