Recycle paper, plastic, metal, glass.

Meaning: Recycling includes processing paper, plastic, metal, and glass for reuse.

Choice of Words: "Recycle" means to process waste materials for reuse, "paper" is a material made from the pulp of trees, "plastic" is a synthetic material made from chemicals, "metal" is a solid material that is shiny and can conduct electricity, "glass" is a hard, transparent material made from silica.

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