If you're an environmentalist, plastic is a word you tend to say with a sneer or a snarl. It has become a symbol of our wasteful, throw-away society. But there seems little doubt it is here to stay, and the truth is, of course, that plastic has brought enormous (1)     , even environmental ones. It’s not really the plastics themselves that are the evil ─ it's the way society chooses to use and (2)     them.

Almost all the 50 or so different kinds of modern plastic are made from oil, gas or coal ─ non-renewable natural (3)     . We (4)     well over three million tones of the stuff in Britain each year and, sooner or later, most of it is thrown away. A high (5)     of our annual consumption is in the form of packaging, and this (6)     about seven percent by weight of our domestic refuse.

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