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In the Data Hunt activity , students are asked to design a 16-block quilt pattern and to then write fractions for each of the colors used in the design . Applicants may request these materials if they wish to test the justification of recognition , in which case they are given a copy of the materials used in the course of recognition . Beginning from the mining of the resources needed to manufacture a product , an LCA takes into account the entire life cycle of a product including the production of the materials used in that product , to the time of its use and disposal , as well considering resources , the energy chain , and environmental impact . The Layout View Preferences include options for customizing the colors used in layout tables and cells , as well . Information on the controls used in each specific application group was obtained from several different sources such as : site visits , NIOSH HHEs , industry experts , industry associations , published literature , submissions to the docket , and published reports from other federal agencies . It also can help the profession address urgent social and political needs around the world , improve the materials used in language teaching and in mainstream education with minority learners , as well as clarify debates and debunk myths regarding L2 issues . Suppose that two hundred thousand men , who are now employed in producing manufactures that only tend to gratify the vanity of a few rich people , were to be employed upon some barren and uncultivated lands , and to produce only half the quantity of food that they themselves consumed ; they would be still , more productive labourers with regard to the state than they were before , though their labour , so far from affording a rent to a third person , would but half replace the provisions used in obtaining the produce . Reproducible results are possible only if the materials used in experiments remain constant and stable . Other significant contributors to the increase in the materials used in house building price index were ready mixed concrete , aluminium windows and doors , and reinforcing steel . The reproduction of the photographs used in this book was made possible by a contribution from Environment Australia .