Briefly, what non-renewable natural resources are most at risk of depletion?
discuss some sustainable development models that have broad applicability to the needs and consumption demands of both developing and developed countries.

Master planned communities outside of chicago. note: population density means people living in an area per square mile. chicago, an urban and highly populated area has a much more higher density than a desert, amish community, settlement, or nomadic region.

The correct answer is:   [b]:   "distortion" .