Urban functions at the city level are connected to the usage and functions of various urban places and include residential, productive, social, commuting, recreational, and administrative activities. Cities are the main centers for these functions, but other locations may play a role depending on the scale of the activity. Examples of urban functioning at the city level include: residential areas that provide homes for people; commercial districts where businesses sell their products; public spaces where people can meet or socialize; transportation networks that connect cities to their surrounding regions and the world; and government offices that manage local affairs. Urban functions also include industrial zones where industries produce goods and materials that are used in other parts of the city or country. Finally, urban areas use their energy resources efficiently through the development of urban forests, green spaces, and other forms of vegetation. At the neighborhood level, urban functions are similar except that they relate more specifically to a certain area of town. For example, a neighborhood park is a place where people can meet, socialize, and have fun because there are no major attractions or events nearby. A neighborhood school is where children go to learn about life beyond the home; it is a place where they can make friends and grow up in a community.