Final answer:
Urban overcrowding leads to several problems, including residential crowding, substandard housing, heavy traffic, and air pollution.
Explanation:
Residential crowding is a significant problem that arises due to the high number of people living in a limited urban space, leading to cramped living conditions. Substandard and racially segregated housing is another issue resulting from cities' high population density, contributing to social inequalities and divisions. Heavy traffic and air pollution are also consequences of urban overcrowding, impacting residents' quality of life and environmental health.
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