What transformed the atmosphere from the

thick greenhouse-gas filled atmosphere of

early Earth towards the one we have today?

Human activity transfer the earth from thick green house gas to what it is. Activities such as burning of fossil fuel like coal has lead to emission of green houses gasses that deplete our ozone layer.

Construction of companies whose activity emits ozone and other green house gasses that lead to the depletion of our ecosystem.

Deforestation has increase the amount of carbon dioxide in the environment leading it abundance in the atmosphere.

All this activity affect ecosystem, deplete the ozone layer and kept us exposes.