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Politics : Evolution -- Ignore unavailable to you. Want to Upgrade?

To: TigerPaw who wrote (62604)	11/13/2014 7:51:14 AM
From: Brumar89	Read Replies (1) \| Respond to of 69300

I would keep in mind when writing about Europe that it is merely a part of a large landmass ie Eurasia. So there is nothing to keep creatures from migrating into and out of Europe on the east. That pretty much nullifies what you're saying below: Europe saw more genetic change than America because Europe has mountain chains and the Mediterranean sea that stretch east-west and therefore form a barrier to north-south migration. America provided clear north-south pathways for animals from the unfrozen south to migrate to the north as the ice melted.