My best guess would be because it relates to it so they need to do there best work so they would need all the info of that and any surrounding topic to get the most accurate information
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Image result for What would be different about earth today if Pangea never broke
The rain which comes from the ocean wouldn't be able to travel far enough inland — leaving parts of Pangea practically uninhabitable by humans and other species. And weather up north would be different too, with Russia being much warmer than it is today.
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