Question: My toilet in my downstairs bathroom sits on a marble slab. I as wondering why and if I remove it to put down a tile floor will it cause a problem when I put it back and replace the toilet. thanks
Answer: The only possible complication that I can think of is that when you install the tile, the closet flange (round plastic pipe the toilet sits on) might be too low to properly reset the toilet.
If this happens, they make extensions that you simply install on top of the existing flange. My recommendation is that you have a qualified person do the work. Although an improperly installed toilet is not the end of the world, it can be very messy and quite a hassle.