Carbon dioxide and global warming: the greenhouse effect
1 mark · EasyState one effect that increased carbon dioxide in the atmosphere can have on our environment.
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Also accept: Rising sea levels; Melting of polar ice caps; More extreme weather; Global warming; Climate change
Common mistakes: Giving answers about other gases, not carbon dioxide; Describing air pollution unrelated to CO2
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Marking points
B1 · 1 mark · States any one correct environmental effect linked to increased CO2 (e.g. global warming, rising sea levels, melting ice caps, more extreme weather)
Worked solution
One possible effect is global warming, which can lead to melting of polar ice caps or rising sea levels.