23.

31.(A) For this alternative, Tornqvist tried and looked at the various forms that plant-based plastics could take. (B)These plastic dining utensils are only used once, but then it takes centuries for them to break down. (C) Better yet, the unique properties of starch mean that this type of cutlery doesn’t have to be made from potatoes alone. (D)The good news is that the new material is 100% biodegradable and thus ecologically friendly. (E) After use, the 100% plant-based cutlery can be thrown away.

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