Most of this article really ought to be heavily edited for style and content. Some of the counterarguments are good, others not (e.g., it doesn't seem right to say that "wood is a bad ship building material." It may not be suitable for building a battleship, but that doesn't mean it's bad for all types of ship).
A lot of the rhetorical questions come across as snarky or arrogant, e.g.:
- Is a polar bear going to swim from the north pole just to get on a boat? Is a sloth going to walk there?
Better to rewrite these as statements, perhaps along the lines of
- A polar bear could not have survived in a temperate or subtropical climate long enough to make the trip to the Middle East. At its maximum rate of travel of X mph, a three-toed sloth could not have traveled the Y miles from its native habitat in South America to the ark in the 100 years that the Bible allows, even assuming that there was a land bridge that allowed it to travel in a straight line.
Some of these counterarguments require more than one paragraph to explain properly, so perhaps a bullet list isn't the best format.