Q:Process:  - The consumer throws aluminum cans and foil into a recycle bin - The aluminum is collected - Taken to a treatment plant - The aluminum is sorted and cleaned ready for reprocessing - The aluminum is re-melted - Turned into molten aluminum - The aluminum is made into large blocks called ingots - The ingots are sent to mills to be rolled out - The rolled out product is made into new aluminum products.  Perturbation hypothesis: suppose there is a recession happens, how will it affect there will be greater awareness of recycling.  Does the supposed perturbation have an effect (direct or indirect) on the process?
A:
yes