Meghan McDonald McDonald 1 Mr.Hrkal OAC World Issues December 18th, 2000 Global Warming Now, for the first time in Earth's history, humans may be a decisive factor in future climate change. The actions we make towards the temperature of the earth and the depletion of the ozone layer are irreversible. A warmer future could result from present-day human activities releasing large amounts of heat-trapping gases into the air. These "greenhouse gases" are part of the reason …showed first 75 words of 1861 total…

…showed last 75 words of 1861 total…