Envirnonmental preservation is the strict setting aside of natural resources to prevent the use or contact by humans or by human intervention. The distinct difference between conservation and preservation, is that conservation allows for the sustainable development paradigm, whereas preservation is complete restriction. Environmental science is the study of the interactions among the physical, chemical and biological components of the environment; with a focus on pollution and degradation of the environment related due to human activities; and the impact on biodiversity and sustainability from local and global development. ... Environmental technology is the subset of technologies concerned with preserving the natural environment by recycling waste products produced by human activities. ... Anaerobic digestion is the breakdown of organic matter by bacteria in the absence of oxygen. ... Compost is the decomposed remnants of organic materials (those with plant and animal origins). ...   The international symbol for recycling. ... The international symbol for recycling. ... Generally, remediation means giving a remedy. ... Sewage (or domestic wastewater) treatment incorporates physical, chemical and biological processes which treat and remove physical, chemical and biological contaminants from water following human use. ... Water purification is the removal of contaminants from raw water to produce drinking water that is pure enough for human consumption. ... Waste management is the collection, transport, processing or disposal of waste materials, usually ones produced by human activity, in an effort to reduce their effect on human health or local aesthetics or amenity. ... For the physical concepts, see conservation of energy and energy efficiency. ... Renewable energy (sources) or RES capture their energy from existing flows of energy, from on-going natural processes, such as sunshine, wind, flowing water (hydropower), biological processes, and geothermal heat flows. ... Some conservation biologists have been concerned about the Amazon rainforest. ... Conservation can be confused with conversation and vice versa. ... Sustainable development is a process of developing (land, cities, business, communities, etc) that meets the needs of the present without compromising the ability of future generations to meet their own needs according to the Brundtland Report, a 1987 report from the United Nations. ...

One major drawback of preservation areas is the problem of unhealthy overpopulation of a single species in that area. Rather, conservation areas or refuges are more typically found today largly due to the responsible human involvement factor.

See also

• Conservation movement
• United States Forest Service
• US NWR
• New Zealand Forest Service
• Canadian Forest Service