Sustainability and environmental management

thumb|Three visual representations of sustainability and its three dimensions. The left image shows sustainability as three intersecting circles. The top right is a nested approach where social and economic sustainability are contained within environmental sustainability. The bottom right shows pillars with the different components holding up sustainability.

use of energy in ways that meet present needs without compromising the ability of future generations to meet their own needs

system of policies, processes and procedures used to natural, park and recreational environments and prevents the emergence of environmental problems

Planning and operation of energy production and energy consumption units

core principle of social ecology