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Question: hi Helen I'm Niamh and I'm 12 and i find Science quite difficult but this has really helped me answer my questions. What is a black and what does it do?
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Asked by #Niamh #wow to Helen on 21 Nov 2014.Question: hi Helen I'm Niamh and I'm 12 and i find Science quite difficult but this has really helped me answer my questions. What is a black and what does it do?
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