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This document outlines topics that will be covered on an upcoming science mid-term exam, including ecosystems, materials, mechanical engineering, and electricity. For ecosystems, the topics are trophic relations, disturbances, and ecological footprint. Materials topics include constraints, deformations, properties, degradation and protection, categories of materials, technical drafting, and manufacturing steps. Mechanical engineering covers linkages, degrees of freedom, and guiding. Finally, electricity topics are electrical charge, conductors and insulators, static electricity, dynamic electricity, Ohm's law, and circuits.Read less