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A gradual increase in the overall temperature of the earth's atmosphere generally attributed to the greenhouse effect caused by increased levels of carbon dioxide, CFCs, and other pollutan. Global warming occurs when carbon dioxide (CO2) and other air pollutants and greenhouse gasses collect in the atmosphere and absorb sunlight and solar radiation that have bounced off the earth’s surface. Normally, this radiation would escape into space—but these pollutants, which can last for years to centuries in the atmosphere, trap the heat and cause the planet to get hotter. That's what's known as the greenhouse effect.global warming

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2.Why is the activity being carried out? (linyue)

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2.Why is the activity being carried out? (linyue)

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Burning of fossil fuels for transportation,heating and cooling our homes and other places and for electricity.
Clearing of trees for building using fire also produce carbon dioxide which causes global warming.
We also use coal,oil and natural gases in industry and generation of electricity . To do this ,we burn the fuels ,and this releases carbon dioxide which traps heat energy.

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3.What are the effects of global warming[Mateen]

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3.What are the effects of global warming[Mateen]

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The effects of global warming are melting of glaciers,climate change,droughts,diseases,frequent hurricane,rise of sea level,affecting some agriculture,heat waves,frequent wild fire and severe precipitation.

Melting glaciers, early snowmelt, and severe droughts will cause more dramatic water shortages and increase the risk of wildfires in the American West.

Rising sea levels will lead to coastal flooding on the Eastern Seaboard, especially in Florida, and in other areas such as the Gulf of Mexico.

Forests, farms, and cities will face troublesome new pests, heat waves, heavy downpours, and increased flooding. All those factors will damage or destroy agriculture and fisheries.

Disruption of habitats such as coral reefs and Alpine meadows could drive many plant and animal species to extinction.

Allergies, asthma, and infectious disease outbreaks will become more common due to increased growth of pollen-producing ragweed, higher levels of air pollution, and the spread of conditions favorable to pathogens and mosquitoes.

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4.Why is the activity considered to have a negative / Positive impact on the environment? Give examples

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4.Why is the activity considered to have a negative / Positive impact on the environment? Give examples

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- Burning of Fossil Fuels is producing CO2 which prevents heat from escaping into outer space. This insulating effect is important because otherwise the surface of the earth would quickly cool down to very cold temperatures at night. (Positive Impact)
- The burning of fossil fuels produces Carbon Dioxide traps heat on earth which melts ice caps and makes sea levels rise. (Negative Impact)done by Darren

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5.What can we do to protect the environment

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5.What can we do to protect the environment

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We can protect the environment by reducing our carbon footprint
We can also reduce our usage of electronics
We can use resources that do not harm the environment
All done by Izan