Aluminum • Appliances • Associated • Bicycles • Bottles • Brass • Burning • Commonly • Construction • Consumption • Contain • Copper • Costs • Countries • Demand • Disposal • Easier • Economic • Economy • Efficient • Energy • Environment • Environmental • Fabrics • Gas • Glass • Greenhouse • Incinerators • Include • Increasing • Instruments • Involves • Jobs • Magnetic • Metals • Most • Musical • Natural • Parts • Plastic • Polluting • Quality • Recycled • Recycling • Than • Toys • Transportation • Typically • Uses • Wire