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It can be so hard to identify which of all the masses of facts and figures and definitions you have learnt you need to include for a particular question, especially given the degree to which topics and th...

Firstly, let’s explain what the active voice is: it’s where the subject of the sentence performs the action of the verb (this is the type of sentence you’re most familiar with).The passive voice is basica...

Throughout the history of the Earth, the climate has always been changing. This is clear from evidence of cycles of glacial advance and retreat. However the last ice age ended abruptly and this can be ass...

I would ask the tutee when considering an answer to divide the question in two to ensure not one part of it is overlooked but give the answer as a whole.Part 1 Conversion of mRNA into cDNA using reverse t...

Completing the square is a method for rewriting a quadratic expression, and can be useful in identifying the minimum value of the expression. The aim is to end up with an expression which looks like c((x+...