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.
Another way of decreasing fossil fuel use is by switching to alternative energy sources, such as renewable energy. Renewable energy is derived from resources that are replenished naturally on a human timescale. Such resources include biomass, geothermal heat, sunlight, water, and wind.All of these sources have their strengths and weaknesses. Some are more suited to certain locations than others, for instance.enewable energy is derived from resources that are replenished naturally on a human timescale. Such resources include biomass, geothermal heat, sunlight, water, and wind. All of these sources have their strengths and weaknesses. Some are more suited to certain locations than others, for instance.