It's global,there has been flood events listed in China and other countries. Some may say that those floods took place far apart but as we do not know how time is measured in the Bible,I believe it is the same event. Because it takes a while to flood the whole earth too,one area may be flooded first and then it spread to other areas.

I think at Noah's time there are no more dinosaurs

I'm not sure but I don't believe in the 6000 years theory because firstly,we don't even know what calendar they are using in Biblical times and also God said one day for him can be a hundred years or so for mankind

Yes. Big Bang theory supports that life was created in a singular event. Maybe not exactly 7 days or 24 hours as again we do not know how time is measured in the Bible,but I do believe that life created rapidly.

I think the fish were also taken into the ark(two of each kind)

Same as 5