I presume that it may be cucmbers sir
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The Renaissance, a movement which stressed the ideas of the classical world, has been described as ending the medieval era and heralding the start of the modern age. Its causes were many, all deeply interconnected and now historians debate the relative importance of each, as well as when the Renaissance actually began. The mid fourteenth century is a common date for the start, although some commentators go back further
Earth can be considered as a closed system, since it only receives sunlight (energy), while the overall mass stays constant, without (almost) any exchange from space. Another example of a closed system is a saucepan or frying pan, on a stove, when its lid is closed.
