do you mean like in a food chain? if so, if an arrow is pointing from one organism to another organism, it means that the organism the arrow is bring pointed toward is going to consume the previous organism. for example, if part of a food chain shows grass and then an arrow pointing from the grass to a deer, that means the deer will be consuming the grass.
i hope this helps! i also hope that i didn't completely misunderstand the question lol but i'm pretty sure this is what you were asking about :) have a great day!
