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LCAs compile the
emissions (air, water, soil, waste etc.) and resource use
of a product much the same as a bookkeeper tallies up figures. The data
usually describe the path of a product from "cradle to grave".
This includes sourcing of raw materials, production of precursor materials,
production of the main product, usage of the product and disposal. The data
are usually characterized by various means. LCAs are carried out in
accordance with the ISO norms 14040 ff.
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