The definition of urban is relating to a city or of a city with a population of at least 50,000 people. An example of urban is the nature of Manhattan. urban. of or characteristic of the styles and culture of the inner city, esp. of the black inner city: urban music, fashions, etc. urban.
Renewable energy is generally defined as energy that comes from resources which are naturally replenished on a human timescale, such as sunlight, wind, rain, tides, waves, and geothermal heat.enewable energy resources exist over wide geographical areas, in contrast to other energy sources, which are concentrated in a limited number of countries.
When this near-surface heat is transferred to water, a usable form of geother-energy is created. Geothermal energy is called a renewable energy source because the water is replenished by rainfall, and the heat is continuously produced by the earth. 2.History of Geothermal Energy. Many ancient peoples, including the Romans, Chinese, and Native Americans, used hot mineral springs for bathing, cooking, and heating.hen this near-surface heat is transferred to water, a usable form of geother-energy is created. Geothermal energy is called a renewable energy source because the water is replenished by rainfall, and the heat is continuously produced by the earth. 2.