scientists have recently discovered holes in the ozone layer, caused by substances called cfcs what are cfcs and how do they affect the environment cfc là các chất gây ra lỗ hổng trong tầng ozone
scientists have recently discovered holes in the ozone layer, caused by the work called cfcsWhat are cfcs and how do they affect the environmentCFC is the substance causing the hole in the ozone
Recently Discovered Scientists have holes in the ozone layer, caused by CFCs gọi substances are CFCs and how do what chúng hưởng the environment CFCs are substances caused holes in the ozone layer