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The Tsarist regime faced opposition more than once in history, the most prominent examples being the 1905 Revolution and the 1917 Revolution. The following essay examines the reasons which made the 1917 R...

You should always look at the number of marks offered for each question to help indicate to you how many points you should include in your answer. For example, for a 3 / 4 mark source question it would be...

I often find it difficult to remember all the different identities, so what is useful is instead to just remember the familiar identity sin^2(x) + cos^2(x) = 1 that we have come across many times, and div...

Planting just one crop such as palm oil in an area decreases biodiversity, resulting in fewer niches for insects. This means that there are fewer insect species in the area, and therefore fewer food sourc...