1.     Bacteria A and Bacteria B are considered hardy bacteria and can survive in extreme environments when grown individually. However, when they are grown together in a closed environment (on an agar plate), Bacteria A thrives, while Bacteria B eventually dies off.
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a)Â Â Â Â Â Using your knowledge of competitive exclusion, explain what has happened. (2 marks)
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b)Â Â Â Â Â Calculate the density per cubic centimetre of Bacteria A on the agar plate if there are 1500 bacteria on a 100cm3 plate. (1 mark)
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