Final answer:
A city-like environment with a diverse population is known as a metropolis. It encompasses a central city, its suburbs, and exurbs, and such areas have a significant impact on natural resource usage and urban development trends.
Step-by-step explanation:
An area that is a city-like environment with a diverse population is commonly known as a metropolis. A metropolis includes a central city and its surrounding suburbs and exurbs. In the U.S., a megalopolis refers to a huge urban corridor encompassing multiple cities and their suburbs, such as the first U.S. megalopolis, New York, which uses vast quantities of natural resources and has been a growing part of the U.S. landscape. The term 'cosmopolis' is less commonly used and typically refers to a city that is cosmopolitan in nature, with a globally diverse population. 'Urban Center' is a general term that can refer to any centrally located urban area, but it lacks the specific connotations of a large or diverse population implied by 'metropolis' and 'megalopolis'.