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The Left will have to continually struggle to make sure that the criterion , for example , of whether there are free trade unions is not just taken to mean free of government control , but of employer control as well ; that the criterion of whether citizens have basic rights includes the rights to food and shelter , and so on . The Gila elk have evolved a strategy that maximizes their chance of survival by balancing two opposing forces : they must be dispersed enough to not compete for food , but be close enough to attract potential mates . Propylene glycol is used by the chemical , food , and pharmaceutical industries as an antifreeze when leakage might lead to contact with food . Some , like the sawtoothed grain beetle and the confused flour beetle , get into food containers in home cupboards through cracks and holes . Mr. van der Stoel said he now had the sad duty to tell the Commission once again that there were credible allegations of numerous and systematic arbitrary executions in Iraq ; interferences with the independent religious practices of the Shi'ite community ; continuing internal deportations of ethnic Kurds ; violations of the rights to food and health ; and violations of the rights of the child .