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14.4 – Impact of Human Activity

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Presentation on theme: "14.4 – Impact of Human Activity"— Presentation transcript:

1 14.4 – Impact of Human Activity

2 Greenhouse effect Natural heating of Earth’s surface caused by certain atmospheric gases, methane and carbon dioxide Results in increased absorption of energy

3 Global Warming Rise in global temperatures
Global temperatures have moved upward over the past 200 years

4 Burning Fossil Fuels Carbon dioxide enters atmosphere from the burning of fossil fuels, coal, oil, natural gas Also releases other greenhouse gases, methane, nitrous oxide 

5 Deforestation Mass removal of trees
Photosynthesis reduced, more carbon dioxide remains in the atmosphere

6 What can we do? Reduce our carbon footprint Conserve energy
Reduce fossil fuel consumption Alternative energy sources

7 14.4 WKT


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