1- what materials are included here (z parameter), type of materials considered, property or properties plotted, domain of c, parameter identified 2- what are the vertical and horizontal trends presented 3-what is the take away story from this plot   please answer i will upvote

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Thermal Properties of Materials

In mechanical engineering, the thermal property is represented as the physical quantity that is relevant to the application of heat. The thermal properties are evaluated by variations in any specific material due to low heat or high heat. The quantities that influence the thermal property of the materials are mass, density, temperature, and many others.