An island, on the other hand, is small. There are far fewer species, and the competition for survival has never reached anything like the pitch that it does on the mainland. Species are only as tough as they need to be, life is much quieter and more settled, and evolution proceeds at a much slower rate. This is why you find on Madagascar, for instance, species like the lemurs that were overwhelmed eons ago on the mainland. Island ecologies are fragile time capsules. So you can imagine what happens when a mainland species gets introduced to an island. It would be like introducing Al Capone,
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