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Abortion is where the foetus/embryo is removed from the womb before it is able to survive independently. It raises ethical questions because it makes us consider when life begins and whether...

The first stage in viral replication occurs when a virus attaches to the surface of a host cell. The viral nucleic acid (VNA) then enters the cell. The VNA then takes over the cell, altering the metabolis...

One of the things that you need to remember about Biology A Level is that you have to memorise the key points of the mark scheme. Something that I consistently struggled with when I was doing past papers ...

An introduction and conclusion are similar and important parts of any history essay. It is crucial though that you do not repeat yourself. An introduction directly addresses the essay question and clearl...

Using the F.O.I.L rule, standing for first, outside, inside, last, we would multiply out the relevant terms. to give: 2x^2+4x+14x+28. Once we have successfully multiplied out the brackets, we would identi...