Glass is inert and doesn't break down; anyone can pick up glass bottles that have been on the beach for decades, wash them out, and recycle them along with new

Glass is inert and doesn't break down; anyone can pick up glass bottles that have been on the beach for decades, wash them out, and recycle them along with new glass. Metal degrades slowly if it's ferrous (iron/steel), but that isn't environmentally harmful. And it can all be readily recycled.