Sustainable development: development that meets the needs of the present without compromising the ability of future generations to meet their own needs. Desirable future state for societies, continue to meet human needs without undermining the integrity of natural bio- systems. The ecological sustainability of human settlements is part of the relationship between humans and environments. Sustainable agriculture with environmentally-friendly methods of farming that allows the production of crops or livestock without damage to natural systems. Sustainable energy is the sustainable provision of energy unpolluted.



