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.
(2) A branch of biology that deals with the distribution, abundance and interactions of living organisms at the level of communities, populations, and ecosystems, as well as at the global scale. (2) The system within the environment as it relates to organisms living in it. (3) A branch of sociology that deals with the relations of human beings with their physical and social environment, also called as human ecology. Supplement. Ecology is a broad science encompassing many fields.