help! I got stuck with my poor reading english skill . Can some one please expla

I try to buid a model from this question but I don't get what it mean by " the balance is input to the regional food industry" (3 row from the bottom). and could you please look through my model at agriculture soil process and flow in and out of this process. I got stuck and don't know how to continue because no good mass in this question

I appreciate it

question photo

Sorry, I don't know what question you are talking about. There is no "question photo" attached.