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Urbanisation and re-urbanisation both refer to the net movement of people into urban areas; in this sense, they are similar. The key difference lies in the times at which this movement occurs. Urbanisatio...

In the mark scheme at English A level, there is often reference to 'form' (e.g. context, letters vs novels), 'structure' (the order in which ideas emerge in the passage) and 'language' (the use of specifi...

A nerve cell when at rest is negatively charged, this means that on the inside it is more negative than on the outside. The potential difference is around -70mV. The mechanism that helps to achieve that p...

sin2x = 2sinxcosxcos2x = cos²x - sin²x=2 cos²x - 1= 1 - 2sin²xtan2x = (2tanx)/(1-tan²x)

Writing a good conclusion is one of the hardest parts of an essay. Remember that the conclusion is the last impression you give an examiner, so it's very worth putting in extra effort and thought, even un...