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Power generation can also be decreased quickly when there is a surplus power generation.
en.wikipedia.org The theory begins with the observation that human social groups tend to be organized according to group-based social hierarchies in societies that produce economic surplus.
en.wikipedia.org When net exports are positive, the country has a trade surplus.
en.wikipedia.org This criterion is the ability to produce surplus value.
en.wikipedia.org The forecast deficit falls to $7.9 billion in 2012/13 and $2 billion in 2013/14, before a $197 million surplus in 2014/15.
en.wikipedia.org