Research three to five building materials of the same type produced by different manufacturers (for example, three rigid insulation boards, three carpets, etc.) and establish which product has the least impact in terms of the following LCA impact categories: eutrophication (nitrogen or phosphate content), ozone-depleting potential (CFC-11 content), global warming potential (CO2 emissions), and water acidification (hydrons, acid hydrogens, and sulfur dioxide). Which of these three products also have a Health Product Declaration? Which manufacturers also claim to be “green” or “nontoxic?
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