u found bio paper 6 simple?? wat abt quest 1 itself?? wat was the investigation???
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Ehmm you mean the last part???
I think it was if the salt solution and the dandelion stem solutions are equal, then there'd be no change...
You can check by measuring the mass on a balance before and after the experiment
or the length before and after the experiment, if it's the same then it proves no change has occured...isn't it? LOl. :/