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We can determine weather the burden of a tax will fall on consumers or suppliers by looking at the price elastcity of demand. Although both groups will usually share the incidence of the tax, the group wi...

'Il faut' is an impersonal expression used to show necessity. In fact, it can be translated as 'it is necessary to'. As it is formed through the verb 'falloir', it has many different tenses. In case the s...

'Por'  mainly indicates the cause, the reason why something happened. However, it is also used to express an amount of time, an approximate place, the price of an item, the means through which something h...

The imperfetto is used to express either habits, actions that lasted a long time in the past or actions that are repeated in the past. It is usually followed or preceded by expressions that indicate that ...

All enzymes have an optimum temperature, at which rate of reaction/catalysis is fastest. Any deviation from the optimum temperature will slow down rate of reaction.

Like most chemical reactions, an...