英語
高校生
解決済み

黄色いマークのしてあるthisは『checkout bags』か『polyethylene』どっちでしょうか
またtheyはwaste productsであってますか?
確認の方よろしくお願いします

However, are checkout bags always bad and eco-bags always good? Checkout bags are made of polyethylene, and some of this comes from the waste products of oil refineries. They do not consume much oil. In contrast, many of the eco-bags are made of polypropylene, 「その一方で」

回答

疑問は解決しましたか?