The hell am I reading, here?
I typed up a nice written response but sadly it was lost, so I will just leave you with these links:
Hopefully that clears up any questions you have well enough, and I don't really want to argue about this anymore, seeing as I'm only fifteen and I know I probably won't be able to persuade you to view the world as I do (unless, by chance, these links help you - if so, that is a miracle in itself and great!). You can also PM me any other questions you have.
Since you're 15, I'll be nice (but firm) about this. Belief in a god is one thing, it only takes a disregard of a few basic tenets of logical reasoning: the burden of proof, the null hypothesis, and Ockham's Razor. Belief in creationism is another animal; one must disregard a mountain of physical evidence supporting evolution. Evolution isn't just a different guess of how things happened a long time ago. It's a model of an ongoing process with practical applications and predictive power in the present day. As the biologist Theodosius Dobzhansky wrote, "nothing in biology makes sense except in the light of evolution." The development of antibiotic resistance in disease-causing organisms is an example of evolutionary adaptation in action, and an understanding of how it works is key to preventing its progress. Our understanding of the history of life's development is complete enough that we can predict what future fossils we'll find, where we'll find them, and what features they will possess, not unlike an archaeological game of Clue. An example of such a fossil is Tiktaalik roseae, a lobe-finned fish ancestor to terrestrial animals that fulfilled scientific predictions with incredible accuracy.
We're very familiar with Answers In Genesis and the like. To anyone with a solid background in the sciences, their objections range from completely missing the point to laughably absurd to willfully disingenuous. Rather than regurgitating these answers that have been prepackaged for you with no greater understanding required, you really ought to acquaint yourself with what scientists actually claim about evolution and why, so that you may think for yourself. No offense, but being as young as you are, you likely haven't been given much exposure to the depth of the evolutionary model and the evidence behind it. For a strong introduction, I suggest you pick up The Selfish Gene by Richard Dawkins. Don't let the attachment of Dawkins' name put you offâ€”the man has been one of the world's foremost evolutionary biologists for decades, and he only recently began writing specifically about religion. Used paperbacks are very inexpensive, and you should also have no trouble finding a copy to borrow from your local library.