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Diffusion is the movement of particles from an area of high concentration to low concentration (down a concentration gradient). This occurs because the particles move randomly, and eventually end up evenly s...

A concentration gradient occurs when you have a solute, like salt, dissolved in a solution, like water. Most of the time there won't be the same amount of salt through out all of the water - there will be mo...

The conditional tense is used to descibe a situation in the future that may or may not happen. For example: If I were rich, I would buy a big house I could go to the cinema later The conditional tense is eas...

In French, the imperfect is used - to describe a scene eg. il PLEUVAIT dehors - to say that you did something on a regular basis in the past eg. je COURAIS chaque lundi matin - or to describe a continuous ac...

The statement may be argued both in favour of and against. In Ovid, t he common fate of being punished in classical mythology for doubting the gods is dominant and Niobe is a representative example. However,...