Good question, Major. When we study cells, one thing that becomes clear is that cells are a bio-mechanical system, not life itself. Cells comprise us humans as the vessel through which we interact as spiritual beings since Adam alone had life "breathed" into him by God when first formed, and that same life was transferred over to Eve when her physical substance was derived from Adam, and thereafter at conception for all others.
So, when people say, in very broad, general terms, that the tree "died," or the cells of the celery stick "died" when digested, that cannot be thought to assume life anywhere near the sense of what we as humans have. These bodies of ours are bio-mechanical machines that have within them a soul and spirit far above that of any animal, and even moreso than plants.
So, yes, when relying upon the most loosely broad application of the term "life" in relation to even all things not human, then death too is equally misapplied to the extent that people like Hugh Ross can trip up the ignorant Christians in his classes, leading them to atheism.
Therefore, when it comes to scripture, and its defining authority for life and death, it most generally is in relation to human physical death (which is the point that the bio-mechanical machine we inhabit no longer functions for us to remain on this earth), and spiritual death, which is separation from God in the spirit realm, casting it out there like a net to include plants and animals is where the most confusions are introduced into world views, and thus more easily corrupting the young minds of students who simply were not prepared to handle the clear distinctions that would otherwise have protected them from the machinations of evil professors who are the pawns of Satan.
You are correct that it goes both ways when it comes to our inability to observe the realities in the garden. We can't say one way or the other that Adam ever did any harm to any creature in the garden, no matter what size, and if he did, it was only to something what was a bio-mechanical machine with instincts programmed into their makeup by God.
What I was getting at in the overall thesis of my responses is that the mere suggestions from naturalistic and theistic evolutionists bring to the table is the only reason anyone is questioning the language of Genesis. Had evolutionary beliefs not ever been posited, we would likely not be having this conversation at all. Those people trying to say that "science says this," is nothing but an attempt to keep anyone from realizing that "Science" doesn't say anything. It's "scientists" who say things, much of which is false.
MM