As I know of, there are signs of both. Some creatures have abilities that are hard to believe. Oh, and better. The universe is one decimal from not being suit for life, as I know of. All things are build through math, and it all fit so well that it is hard not to believe in someone at least guiding the creation.
Evolution. With all the evidence and such it is more likely than creationism. But that doesn't mean that god doesn't exist. I believe in god but i also believe in evolution.
But surely if you have any intelegence at all then you can see evolution for what it is and that is scientific fact? What is the big deal? You can't prove creationism wrong as that would be like trying prove santa clause isn't real but you CAN prove evolution is right, that's the difference!
Nothing in science is a fact, it is just temporary agreement.
"Do we disbelieve, what we do not see with our eyes? Is it our sight that truly makes us blind?"
Why can it not be a blend, like mentioned earlier? Structures like the ancient eye is too detailed to be explained. How could something with such a structure be made through evolution, how can it be, the solar system is made the way it is, the universe just like it should be to contain life?
If you are a creationist, you need to explain three things to show that Creatiionism has merit:
1. The all-natural law that all organisms will fight to survive and reproduce through Survival of the Fittest, where they will adapt to their environment over many years to survive, where species that cannot adapt will eventually die off.
2. The ability for viruses and bacteria (e.g. NON-LIVING "organisms" to be able to resist medicine and vaccinations through adaptation.
3. Through mutation, organisms, over many, many years, will slowly change to form another species by different definitions of Isolation.
I'm sure there's many more, but these are the three main topics that must be proven. And NO none of this "God made it so..." because in Creationism, God can make anything do everything if he wanted to.
Bonus: I challenge God to make a stone so heavy, even He cannot carry it. If he succeeds, he is not god because he is not all powerful. If he cannot make a stone that heavy, he is not god, because he is not almighty.