完善後的句子應該是：
1 Currently,a hot button is the problem of excessive packaging across society,the prevalence of which has greatly impacted­­ the environment.
(必須用倒裝句結構,因為of which距離excessive packaging 實在太遠了.用is替換has become更能說明the problem的狀態(tài).)
2 Currently,the problem of excessive packaging has become a hot button across society,and its prevalence has a great side effect on the environment.
(用its替換the- - - of which會使句子更簡單明確.has a great side effect on是英語natives在表達這種語境時常用的短語.用詞的'to the point“是別人認為你英語ok的關鍵.)of which距離excessive packaging 實在太遠了這個理由說的有點牽強Currently,the problem of excessive packaging has become a hot button across society,the prevalence of which has greatly impacted­­ the environment.如果是原句的話，of which就算指hot button ，我覺得也是通順的。。你覺得呢a hot button 一般認為是“抽象的概念”，而這種概念本身是不會破壞the environment的。 朋友，不要有什麼想法，這里只是盡力而為。Just act on your preference.有道理！thanks