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| style="height:20px; width:200px; text-align:center;" |Orthoceras lived until 485 million years ago. When the oceans became too cold it became '''extinct'''
| style="height:20px; width:200px; text-align:center;" |The Woolly Mammoth became '''extinct''' when it lost its [[habitat]] at the end of the last [[Ice Age|ice age]] 10,000 years ago.
| style="height:20px; width:200px; text-align:center;" |Haast's Eagle was the biggest eagle to ever exist, but it became '''extinct''' when humans killed all of its [[prey]].
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| style="height:20px; width:200px; text-align:center;" |The Dodo lived on a small island with no [[predator]]s to kill it. When humans arrived, rats came with them and ate all the dodo eggs making them '''extinct'''.
| style="height:20px; width:200px; text-align:center;" |272 million years ago the [[atmosphere]] became [[pollution|polluted]] with [[Hydrogen Sulphide|hydrogen sulphide]] [[gas]], causing all the dimetrodons to [[suffocate]], making them '''extinct'''.
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