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chemiluminescence

n.
1.luminescence resulting from a chemical reaction as the oxidation of luciferin in fireflies

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    Idiom of the Day

    whoop it up
    to enjoy oneself in a lively and noisy manner
    The fans were whooping it up after they won the basketball game.



    1.
    S1: Human ways of life have steadily changed.
    S6: During the last few years change has been even more rapid than usual.

    P: From that time to this, civilisation has always been changing.
    Q: About ten thousand years ago, man lived entirely by hunting.
    R: Ancient Egypt -Greece - the Roman Empire - the Dark Ages and the Middle Ages - the Renaissance the age of modem science and of modern nations - one has succeeded the other; and history has never stood still.
    S: A settled, civilised life began only when agriculture was discovered.

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