<span>Natural selection is the differential survival and reproduction of individuals due to differences in phenotype. It is a key mechanism of evolution, the change in the heritable traits characteristic of a population over generations.
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Have very few or no predators in the new ecosystem.
It's hard to explain but it would like, be less wild than the seasons we have today.
Its D, because i had this problem on a test, and of course i figured out the answer the hard way... lol