muwth (mooth) (Strong's 4191):
I still don't see how this can be read as "beginning to die physically".
PS:
http://www.sacrednamebible.com/kjvstrongs/STRHEB41.htma primitive root: to die (literally or figuratively); causatively, to kill:--X at all, X crying, (be) dead (body, man, one), (put to, worthy of) death, destroy(-er), (cause to, be like to, must) die, kill, necro(-mancer), X must needs, slay, X surely, X very suddenly, X in (no) wise.
I still don't see how this can be read as "beginning to die physically".
PS:
Plants are alive too, aren't they? And by ripping them out of the ground and eating them they are killed.Genesis 1.29: Then God said, "I give you every seed-bearing plant on the face of the whole earth and every tree that has fruit with seed in it. They will be yours for food. 30 And to all the beasts of the earth and all the birds of the air and all the creatures that move on the groundâ€â€everything that has the breath of life in itâ€â€I give every green plant for food." And it was so.