Is that a serious question? Go look up a little scientific theory called plate tectonics.
As for evidence against a world wide flood, if one existed, we should expect to find a uniform layer of mud and silt all over the world. We don't.
Of course we don't. Even if the earth were perfectly flat, currents would cause some unevenness in the sediment deposit.
The sediment wouldn't have been deposited like someone frosting a cake. It would settle out and would be thicker in low and valley areas, or under the oceans, than on mountain tops. Be real.
You claim to be scientific and get something so basic wrong, and then wonder why people don't buy the ToE tripe that evolution happened when they can't get something so simple correct.