Even the moss has a right to live. It is equal with man as a creature of God. Hunting game is another example of the same principle. Killing of animals for food is one thing, but on the other hand they do not exist simply as things to be slaughtered. This is true of fishing, too.
Many men fish and leave their victims to rot and stink.
It is not a zero. Some of our housing developments demonstrate the practical application of this. Bulldozers have gone in to flatten everything and clear the trees before the houses are begun. The end result is ugliness. It would have cost another thousand dollars to bulldoze around the trees, so they are simply bulldozed down without question.