Environmental management

• Environmental management is not, as the phrase could suggest, the management of the environment as such, but rather the management of interaction by the modern human societies with, and impact upon the environment. The three main issues that affect managers are those involving politics (networking), programs (projects), and resources (money, facilities, etc.)
  
  http://www.slideshare.net/ashishtqm/environment-2868389

• Ecosystem An ecosystem is generally an area within the natural environment in which physical (abiotic) factors of the environment, such as rocks and soil, function together along with interdependent (biotic) organisms, such as plants and animals, within the same habitat

http://www.slideshare.net/ashishtqm/ecosystem-3252887