environmental and resource management
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A zero growth economy features stable population and stable consumption that remain at or below carrying capacity. The term typically refers to a national economy, but it can also be applied to the economic system of a city, a region, or the entire planet. (Wikipedia 2015)
According to the second law of thermodynamics the entropy of an isolated system never decreases; such a system will spontaneously proceed towards thermodynamic equilibrium, the configuration with maximum entropy.
Praxis is the process by which a theory, lesson, or skill is enacted, embodied, or realised. (Wikipedia 2015)
In ecology, sustainability is the capacity to endure; it is how biological systems remain diverse and productive indefinitely.Despite the increased popularity of the use of the term "sustainability", the possibility that human societies will achieve environmental sustainability has been, and continues to be, questioned—in light of environmental degradation, climate change, overconsumption, population growth and societies' pursuit of indefinite economic growth in a closed system. (Wikipedia 2015)
The circular economy is a generic term for an industrial economy that is, by design or intention, restorative and in which material flows are of two types, biological nutrients, designed to reenter the biosphere safely, and technical nutrients, which are designed to circulate at high quality without entering the biosphere. (Wikipedia 2015)