Ok, Cowboy, you got me going.. Skelatal remains of clusters of various animals have been found on moutaintops where they were trying to get to higher ground. Every civiliztion has a version of the flood it's folklore,so if every race was a desendent of Noah's family, then the folklore would have a logical basis.
As for Moses, he most likey crossed at the sea of reeds of thye Red Sea at low tide after a strong dried the surface enough to walk and herd livestock on, but not dry enough for Egypt's chairots and they were stuck when the tide came in.
\As for the food, you're forgetting the manna. This was a type and shadow of Christ, manna merans 'bread' which came heaven.