The whole creation story is a complex metaphor, and is not be taken literally. The idea is that humans have been placed on the eath as the dominant species (hence 'made in God's image'), and have the power to control almost any animal. The whole apple dealy is about human nature- basically, we've got this really nice set-up, but we're such greedy, arrogant smeg-heads, that we screw it up and ruin it for everyone. The Garden of Eden actually represents the world, but humans screw everything up by being jack-asses, and make a mess of the whole damn thing.
