The document discusses global warming, defining it as the increase in average temperatures of the Earth's surface over the last century due to greenhouse gas emissions from human activities like burning fossil fuels and deforestation. This greenhouse effect occurs when gases like carbon dioxide trap heat in the atmosphere that would otherwise escape into space. The effects of global warming include rising sea levels, changing weather patterns, spreading diseases, and threats to ecosystems. To prevent further global warming, the document recommends reducing fossil fuel use, developing renewable energies, using efficient vehicles and devices, and sustainably managing forests and agriculture.

1. Global Warming

2. Content
1. What is global warming
2. Green house effect
3. Causes of global warming
4. Effects of global warming
5. How to prevent
6. Conclusion

3. What is global warming?
• Global warming refers to the increase
in the average temperature of Earths’
surface.
• Over the last century global average
temperature has increased up to 10F.

4. Greenhouse gases
• Carbon dioxide
• Methane
• Water vapor
• Ozone
• Nitrous oxide

5. Greenhouse effect,
o Global warming occurs when carbon
dioxide, other air pollutants and
greenhouse gases which are collected
in the atmosphere and absorb sunlight
and solar radiation.
o Normally, this radiation would escape
into the space. But these pollutants,
which can last for years to centuries in
the atmosphere, trap the heat and
cause the planet to get hotter. This
effect is known as greenhouse effect.

6. Causes of global warming
Industrialization
Deforestation
Emission of greenhouse gases
Human activities

7. Effects of global warming
• Rise in temperature
• Changes in weather patterns
• Rise of sea levels
• Spread of diseases
• Decrease in human population
• Loss of natural habitats
• Threat to the ecosystem

8. How to prevent
• Reduce the amount of fossil fuel burnt
• Use renewable energies
• Use fuel efficient vehicles
• Use of efficient devices
• Sustainable agricultural and forest management

9. Conclusion
• Increasing of the concentration
of greenhouse gases in the
atmosphere, we’re amplifying
the planets’ natural greenhouse
effect and turning up the global
warming. Therefore we must
make people aware about the
bad effects of global warming
and try to minimize this hazard.

10. Reference
 global warming - Google Search
https://www.google.com/search?client=firefox-b-d&q=global+warming
 Global Warming 101
https://www.nrdc.org/stories/global-warming-101
 global warming | Definition, Causes, & Effects
https://www.britannica.com/science/global-warming
 How You Can Stop Global Warming
https://www.nrdc.org/stories/how-you-can-stop-global-warming

11. Thank you!