Poor air and water quality, insufficient water availability, waste-disposal problems, and high energy consumption are exacerbated by the increasing population density and demands of urban environments. Strong city planning will be essential in managing these and other difficulties as the world's urban areas swell.
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The answer is B. The founding fathers were all strongly influenced by enlightened thinkers and philosophers of the time when drafting the Declaration of Independence. One particular philosopher was John Locke, who wrote in his work that the natural rights of man include "life, liberty, and property" and these natural rights should not be given up the citizen in the face of the government. "Life, liberty, and the pursuit of happiness" is extremely similar Locke's notion of the Social Contract.
