1.what are the practices in your family shows changes in the materials that are useful and harmful to the environment? 2.what are the practices in your family shows changes in the materials that are harmful to the environment 1.list down changes in the materials that are useful to the environment.
2.list down changes in the materials that are harmful to the environment

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Match the vocabulary terms to their definitions. 1 . a long, chain-like set of molecules made up of repeating units joined end to end polymer 2 . a hard, brittle, heat- and corrosion-resistant material made by subjecting a nonmetallic mineral mixture to intense heat ceramic 3 . a plastic with low elongations that cannot be recycled thermoset 4 . a carbon fiber embedded in a polymer resin matrix thermoplastic 5 . a plastic with high elongations that can be recycled crystal 6 . a solid form resulting from the arrangement of atoms, ions, or molecules in definite geometric patterns composite