Originally posted by St.James
I'll give you a little example instead.
First of all new type of species always comes from the other type of species. (Evolution)
Now we have this certain type of wood, let's say Oak for an example, in "continental" Estonia. Somehow some of those oak chestnuts "traveled" to the islands from the main land. Now in Saarema (an Estonian island) those chestnuts started to sprout. But as always there is some mutatation wich is caused by a certain environment. Mutation is happening with every organism, some mutatations are big, some are small but they are all making difference in the organism/molecul structure.
Because of those mutations the lineaments are different when the oak is "gorwn up" compared to the main land's oaks.
Some of those changes are better, some are not.
The main land oaks still remains because the main land and the island oaks are isolated form each other so they don't affect each other at all.
Sometimes when the mutatation is too big, then the organism looks totally different than the rest of its companions. If the changes are good then some the old lineaments "die" and a new species is born. Sometimes the changes aren't good, the organism looks totally different, it's like a new species but the changes were bad and so the organism dies.
Now some apes mutaded, the changes were good and the people were born. The changes always have its good and bad sides. Humans have bigger and more functional brains, and the hands/fingers are better for crafting very advanced things. But humans aren't physically so good anymore. So there's almost every time a compromise.
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