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You wo n't be distracted by anything . Some time ago , armchair revolutionaries used to pontificate that guerrilla warfare and revolution are impossible in South Africa because the regime has enormous military power and is backed by millions of Whites ; because it had segregated black and brown people into ghettos which could easily be threatened by a few armoured vehicles or tanks ; because it was able to recruit numerous spies in those ghettos , and because guerrilla fighters cannot easily find sanctuary in mountains and jungles or even in neighbouring countries , which can easily be blackmailed by military and economic pressure from the Pretoria regime . The pH of water will be influenced by the alkalinity ( buffering capacity ) and the amount of free carbon dioxide . Corn that has been damaged by drought , high temperatures , blight , frost or hail can be salvaged for silage .