March 24, 2017

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why is cellulose a tough material?
why does cellulose need to be so tough?
please help

  • chem - ,

    | : unjaye bazi ke to barfa bayad benode inke bebinanet unaro bokoshi bad beri pishe un dota toope jangi E ro negah dari bad beri to mahale sabz rang.un ghesmat sabzrang kojast?peidash nemikonam

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