It's hard for anyone not to believe (accept, recognize) in natural selection. I don't know how one could not accept natural selection, but I'm sure they're out there. If you look at the divine source as a gardener, and the world the garden, it's not hard to see that creationism and natural selection can work hand in hand. This divine gardener plants 'seeds' that eventually grow and adapt into the plants and animals that populate the earth now.