WHAT IS RENEWABLE ENERGY SOURCES AND HOW CAN RENEWABLE ENERGY SOURCES BE MORE SUSTAINABLE THAN NON-RENEWABLE RESOURCES?
Besides geothermal and tidal, most processes are powered by the sun ( http://renewable-energy-source.info/ ). The most important characteristic about RES is the fact that capturing these alternative forms of energy does not permanently deplete the resourse and is much more eco-friendly in the long term, unlike the burning of fossil fuels which will inevitably be fully exploited.
Department of Biodiversity and Conservation Biology
University of the Western Cape