Q$\mathrm{.}1.$ LCA is a structured, internationally standardized method and management tool $($see ISO $14040$ and $14044,2006)$ for quantifying the emissions, resources consumed and environmental and health impacts that are associated with goods and services $($products$).$ LCAs take into account the product $\text{'}$s full life cycle: from the extraction of resources, over production, use and recycling up to the disposal of the remaining waste. Explain two mandatory and two optional steps for the LCA. Refer Case Study $-$ LCIA Handbook

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