http://m.youtube.com/watch?v=Ngt1N7Ftvaw (from Baldrick 'Catastrophe' series')
http://m.youtube.com/watch?v=wn62AjIpWMw (BBC Horizon)
248 million years ago, 95% of life on Earth became extinct.
Y13 Geology: please watch the two programmes on the Permo-Triassic Mass Extinction.
You should have a worksheet which accompanies the BBC programme. Please make notes from p272 to go with it. Make sure you have a definition of a 'Mass Extinction'.
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