The Human Factor.

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Presentation transcript:

The Human Factor

Greenhouse Effect The greenhouse effect is the retention of heat by the Earth’s atmosphere Without this life could not exist on Earth Scientists believe that the greenhouse effect can be increased or decreased by changing some atmospheric gases like carbon dioxide Some of this could lead to global warming

Global Warming Temps worldwide have increased over the last 200 years If this continues, polar ice caps will continue to melt and oceans rise

Impacts of Human Activities Car exhaust and deforestation play roles in global warming