I'm choosing a smaller topic from GREENHOUSE,which is climate change for my 2nd assignment.
What is climate change?
People talk a lot about the weather, which is not surprising when you consider the impact it has on our mood, on how we dress and on what we eat. 'Climate' however is not the same as the weather. It is the average pattern of weather for a particular region over a long period of time.
The climate has and will always vary for natural reasons. Natural causes of this include fractional changes in solar radiation, volcanic eruptions that can shroud the Earth in dust which reflects the heat from the sun back into space, and natural fluctuations in the climate system itself.
However, natural causes can explain only a small part of this warming. The overwhelming majority of scientists agree that it is due to rising concentrations of heat-trapping greenhouse gases in the atmosphere caused by human activities.
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