Sustainability aims to balance the requirements of the natural environment with the needs of human societies, conserving both for all species on Earth to make use of and enjoy. In addition, sustainability improves the health of the environment, biological diversity, the protection and preservation of significant ecosystems and high quality of life (Smith, p4, 2003). Both preventive and restorative actions are the best strategies to achieve environmental sustainability in the current world. This is because the environment has been greatly degraded causing the breach of the natural ecosystem, the loss of biodiversity and reduction in the peoples’ livelihood. This means that prevention alone cannot achieve sustainability because the needs of the present have to be met, hence restoration should be incorporated. On the other hand, restoration should not be heavily relied on as the initial approach, such that people degrade the environment so that they can restore it, rather it is good to keep away from degrading the environment in the first place. However, restoration should be applied where destruction has occurred that could prevent sustainable utilization of valued constituents of the physical environment (Sutton, Para4, 2004). Some of the issues that pose .threats to realizing environmental sustainability include: degradation of the living environments (habitats) of native species, release of chemicals and other effluents in to the physical environment including water resources, release of greenhouse gases into the air than can cause global warming and the exhaustion of various mineral resources including oil.