Poor Affinity

I relate
to the enzyme
of all life
Rubisco
who grabs carbon dioxide
and sends it to be twisted
and turned
into sugar.

But he doesn't like carbon all that much
and has a wandering eye
and will even settle for Oxygen
when there's enough of it around.

So here I stand
in the midst of Oxygen
(about twenty percent atmospheric)
looking for some Carbon-
gratefully more than one in a million,
but not by much.

I hope I don't fix an Oxygen
because then
it takes a whole lot of work
to make things right.