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  1. E

    Multiple choice

    i got the exact answers as this. 9 cannot be B as carbon dioxide is carried in blood as bicarbonate ions in plasma, not attached to haemoglobin
  2. E

    General Thoughts: Biology

    Re: Hsc 2009 bio exam Question 1 is C. For sure. I'm reading my textbook and i quote "New alleles in organisms come about as a result of mutations"
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