By MICHAEL IP. Forty years ago, on March 29, 1973, the United States ended its military involvement in Vietnam. Although the war would continue another two years, the South Vietnamese would no longer receive American assistance.
Ecology (from Greek: Î¿á¼¶ÎºÎ¿Ï, house, or environment; -Î»Î¿Î³Î¯Î±, study of) is the scientific analysis and study of interactions among organisms and their environment. It is an interdisciplinary field that includes biology, geography, and Earth science.
ecology. n. 1. (Environmental Science) the study of the relationships between living organisms and their environment. 2. (Environmental Science) the set of relationships of a particular organism with its environment. 3. (Sociology) the study of the relationships between human groups and their physical environment.