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.
Why is geothermal energy renewable source of energy? Geothermal energy (earth's thermal energy in form of heat generated and stored in Earthâs core) is renewable source of energy because earthâs heat is practically inexhaustible source of energy that is being replenished by radioactive decay of minerals at a rate of 30 TW.