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===Human effects on the Atmosphere===
: The equilibrium of [[gas]]es has been affected by [[combustion]] and other industrial processes caused by [[human]]s.
: Before the [[Industrial Revolution|industrial revolution]] the amount of [[Carbon Dioxide]] in the '''atmosphere''' was 0.02%. Since then, due to the [[combustion]] of [[Fossil Fuel|fossil fuels]] it has increased to 0.04% which [[scientist]]s believe is causing the [[Mean Average|average]] global [[temperature]] to increase.