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Although it depends what your research essay is on (i.e. you can't use the same idioms if you are writing an essay on a novel character and on a historical event), there are a few good ones that can be...

At first, this seems like something hard to do. However, when you think about it, you realise it's just the same as knowing which quotes to memorise in a closed book exam.

The easiest way...

Speciation is a complex topic, and indeed what defines a species is still debated today. However, one factor is key to the process of speciation; gene flow. Gene flow between populations of a species e...

When it comes to curve sketching, there are a number of tests that you can do to find out crucial characteristics about the curve. They are following:

1. Setting x = 0 will give you the p...

Historical opinion - also known as historiography - is essential to essay writing. Including the opinions and arguments of historians shows your awareness of the field. It will impress your examiners i...