theory- a well-substantiated explanation of some aspect of the natural world; an organized system of accepted knowledge that applies in a variety of circumstances to explain a specific set of phenomena; "theories can incorporate facts and laws and tested hypotheses"; "true in fact and theory" ...
Reed, E. S., and Jones, R. K. (1977). Towards a definition of living systems: a theory of ecological support for behavior. Acta Biotheor. 26, 153-163. doi: 10.1007/BF00048424Reed, E. S. & R. K. Jones (1977). Towards a definition of living systems: A theory of ecological ...
thedefinitionofecocriticism生态批评的定义 The Definition of Ecocriticism In W estern countries:(1)The term“literary ecology”, whose emergence symbolizes the germination of ecological criticism, is defined by Joseph W. Meeker as “the study of biological themes and relationships which appear in ...
One example of a biological theory is the germ theory of disease. the germ theory of disease posits that certain microbes can make us ill if we are exposed to a certain amount of them and that some illnesses caused by certain microorganisms can be spread person-to-person. What are the th...
In theory, the nation-state and ethnic diversity are diametrically opposed, and on many occasions nation-states have attempted to solve the problem of ethnic diversity by the elimination or expulsion of ethnic groups—notable examples being the Nazi policy against the Jews during World War II, ...
Since that time, sustainable development has emerged as a core idea of internationaldevelopment theoryand policy. However, some experts have criticized certain features of the concept, including: Its generality or vagueness, which has led to a great deal of debate over which forms or aspects of ...
Study of marine eco-economic system have made a breakthrough in recent years,but the domestic and foreign scholars have not yet uniformed the understanding on the marine ecology,economy and social system and their interaction law,basic theory research is very weak.Compared to terrestrial eco-economy...
What is an ecological niche? Learn the ecological niche definition, ecological niche examples, ecological niche modeling, and importance of...
Cell theory is a scientific theory proposed by the scientists, Theodor Schwann, Matthias Jakob Schleiden, and Rudolf Virchow. It is formulated to refute the old theory, Spontaneous generation. It suggests the following tenets: (1) All living things are made up of one or more cells, (2) the...
By this timeDarwinhad made necessary a complete revision of man’s view of nature with his theory that biological changes inspeciesoccur through the process ofnatural selection. The theory ofevolution—that organisms are continuously evolving into highly adaptedforms—required the rejection of the stat...