Hence, the total damage mentioned
above can be easily calculated by summing up, for instance, the total
amounts corresponding to the inputs depicted in the figure. Moreover,
in Fig. 4 for each single input-item considered, each damage category
was allocated a weighing point. Doing so enabled documenting that
Resources is the one to be mostly affected by the system due to the
high contribution coming from production of 1 kg PS-granule. Reduced
impacts occur to Climate Change and Human Health, in a more evident manner for PS-granule production;whilst, the damage affecting Ecosystem
Quality can be considered as almost negligible for all inputs taken
into account.