about how long does it take a Styrofoam cup to decompose

10 months
10 years
100 years
400 years



  1. 0 Votes

    According to an article that I found, several relatively reliable sources claim that styrofoam is an “immortal” waste material. This means that it will never decompose or completely break down. If the styrofoam is combined with plastic, then the cup will take approximately 50 years to break down.

  2. 0 Votes

    While browsing, I saw one site that said 400 years (listed below) though the majority said over a million years because there is no living organism that recognizes Styrofoam as food to break it down. 

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