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Global Warming

Global Warming. Q:What is global warming? A:Global warming means a progressive rise in the mean annual temperature in the whole world. Q:What causes global warming? A:It’s mainly due to the greenhouse effect. Greenhouse effect. Natural greenhouse effect.

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Global Warming

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  1. Global Warming • Q:What is global warming? • A:Global warming means a progressive rise in the mean annual temperature in the whole world. • Q:What causes global warming? • A:It’s mainly due to the greenhouse effect.

  2. Greenhouse effect

  3. Natural greenhouse effect

  4. Enhanced greenhouse effect

  5. Types of greenhouse gases • carbon dioxide (CO2) • methane (CH4) • nitrous oxide (N2O) • chlorofluorocarbons (CFCs) • ozone (O3) • water vapour (H2O)

  6. Carbon dioxide

  7. Methane

  8. Nitrous Oxide

  9. Chlorofluorocarbons

  10. Chlorofluorocarbons

  11. Consequences of greenhouse effect • Rise in sea level • Disease to human e.g. skin cancer • Dying forests • Change in climate

  12. Impact on human life • Economic Impact:impact on low-lying coastal areas and islands • Agricultural Impact:changing the soil moisture contents • Effects on Aquatic systems:reduce fish populations, and the abundance of freshwater species

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