[Terriergal]

Are you asserting that pre-flood people typically lived 900+ years?

Bingo! Or at least a lot longer than they do today.

If there was a canopy of water over the earth (or ice) it would block much of those aging UV rays... and create a greenhouse atmosphere, where plants and animals and people would grow quite large.

In addition C-14 decay would be drastically different than it is today.

[Right Wing Professor]

If there was a canopy of water over the earth (or ice) it would block much of those aging UV rays.

So people who religiously apply sunscreen, or live exclusively indoors, can be expected to live 900 years?

and create a greenhouse atmosphere, where plants and animals and people would grow quite large.

I'm not sure what this means. So in the tropics, it's hot and very human, people would be expected to grow very large. Like the pygmies, say?

In addition C-14 decay would be drastically different than it is today.

Nothing we currently know of nuclear physics allows a significant change in the ¹⁴C decay rate (unless the ¹⁴C is in another frame, and the rate will be the same measured within that frame. )