2020_ICM_Problem_E.pdf

所需积分/C币:5 2020-02-14 06:32:51 141KB PDF

2020美赛E题 Since the 1950s, the manufacturing of plastics has grown exponentially because of its variety of uses, such as food packaging, consumer products, medical devices, and construction. While there are significant benefits, the negative implications associated with increased production of plast

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