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Neurones are nerve cells that carry information as tiny electrical signals. There are three different types of neurones, each with a slightly different function: sensory neurones carry signals from recept...

Spanish has two past tenses, the preterite and the imperfect. The difference between them can be hard to grasp. Generally speaking the preterite is used for actions in the past that are seen as completed....

Plato had a dualist notion of body and soul. His ideas were wrapped up in his theory of the Forms, as he believed that the soul was the only thing that mattered, and that the body was a hindrance to it, g...

There are 3 main ways of solving a quadratic equation x^2 + bx + c = 0 (we'll suppose the coefficient of x^2 is 1 for now). The first is factorisation, where if you can spot that you can factorise the exp...

In German, unlike in English, there are 3 different ways to address someone and say 'you'. In English, we have one easy way to address one person, two people, or a group of people, and it doesn't matter i...