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why is the chewing gum stuck to the sidewalk always black?

4 Answers

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  • 9 months ago
    Favourite answer

    Because it gets dirty from the blowing debris and ppl stepping on it.

    • STORMY K9 months agoReport

      thank you for the reply

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  • 9 months ago

    It's probably very dirty or it possibly might be mold.

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  • carrie
    Lv 7
    9 months ago

    People walking over the gum would turn it black,

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  • Kathy
    Lv 7
    9 months ago

    Because it gets dirty...

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