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Bio Help Please :(

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For our bio exam, should we study and memorise all the processes of sewage treatment, or should we just understand the main concept.
 
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Cozmo35d said:
For our bio exam, should we study and memorise all the processes of sewage treatment, or should we just understand the main concept.

I've never seen it come up in a question, and didnt see it in the syllabus either. I would just know the two methods are trickling filter and activated sludge, they simply are what their names say, so just understand what is used, ie, microorganisms.
 
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