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Unit 1 ­ Section B - Challenges for the Planet
The causes, effects and responses to climate change

Describe how the climate has changed since the last ice age
Explain the causes of this climate change ­ to include volcanic activity, orbital geometry and
variations in solar output
Explain the…

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Since the last Ice age:
There have been fluctuations in the worlds temperature (10,000 years)
Warmer periods and colder periods of time
In the past 100 years the temperature has risen steadily, and this is predicted to continue.

There are two main causes of this long term change
Internal factors…

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o Ruining homes for many species and 500 million people who depend on them

1988 ­ IPCC (Intergovernmental Panel on Climate Change) "Earth has warmed by 0.5°"
1992 ­ Earth Summit (Rio de Janiro) ­ first international treaty to stabilise greenhouse gases. 154n
1997 ­ Kyoto protocol ­…

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Cycle paths make it safer for cyclists promoting green travel
Pedestrianised areas safer and traffic free
Increased costs of Parking people want to avoid high charges
Quality bus shelters people don't mind waiting there ­ shelter & protection
Car sharing filled cars are more efficient
Bus lanes quicker bus services,…


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