Forests cover 30% of earth's land surface, land covers 29.22% of earth surface, water covers 70.78% of earth surface (98% of that is in the oceans) (326 million trillion gallons of water) 1.6% in ice caps, .3.6% under land wells aquifers, .036 lakes and rivers,
80% of atmosphere is nitrogen most of the rest is oxygen
People occupy less than 2% of land mass - It mathematically does not seem possible we create pollution that changes the whole earth and the atmosphere above the earth.