Increased desertification has resulted from all of the following factors EXCEPT rapid population growth.
O overgrazing.
O deforestation.
O excessive crop planting.
O double cropping.

Excessive crop planting does not cause desertification

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.