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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 go...

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 divide...

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 sources ...

Comprehension piece: Inglaterra hace el 72% de su trabajo con países donde no se habla inglés. Inglaterra pierde el 69% del comercio europeo porque sus empleados no hablan idiomas extranjeros. Los trabajador...

First I would read the question which you have been given. Underline the key words and think about what the question is really asking you as many mistakes have been made for answering the wrong question or t...