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Ensure that your answer is precise, without too much waffle - this can confuse examiners and you'll lose easy marks! Take it step by step: First, the neurotransmitter , acetylcholine , is released from the p...

To write a top essay in French, you need structure, vocabulary and complex structures. Try to use topic-related vocab for both AS topics and for A2 literature, and try to use complex structures in as many se...

This can't be differentiated with the usual methods (chain rule, product rule). First we set y = x x , and our objective is to calculate dy/dx in terms of x. To turn this function into more familiar function...

To calculate an object's weight, we have weight = mass * gravitational field strength (W = mg). From this, we see that an object with a greater mass (e.g. a hammer compared with a feather) has a greater weig...

Although a lot of the time this can seem like a daunting question as there's a lot of specific terminology to use and a variety of reactions/interactions occurring, by splitting it up into short, simple step...