No evolution means no new forms of live.  No new forms of live means that
any form of life on the planet now must have been on the ark.  It is estimated
that there are between 10 and 40 million different species on the earth.

Let's be conservative.  Say that Noah saved 10 million different species.
The Ark was (300x50x30 cubits) 140x23x13.5m, giving it a volume of 43,470
cubic metres.  10 million speces means (approx) 15 million animals
(hermaphrodites, plants, etc).  On average, each animal would have 0.0029
cubic metres of space.  That's about the size of a small shoebox.

We have yet to account for the structures dividing/supporing the animals, the
weight of all of this, and all the food that they ate.  How many animals
can survive 150 days without food?  What about the mess?

Not only that, but all microorganism-based diseases must have been on the
ark as well.  The 8 humans must have carried the flu, polio, smallpox,
tetanus, dengue fever, canker, cholera, measules, mumps, scabies, rabies,
herpes, gonhorrea, syphillis, and AIDS.  Not a healthy bunch!