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.
Define an ecology, community, ecosystem, and keystone species. Ecology is the study of the interactions of living things and their surrounding. A community is a group of different species that live in one area. An ecosystem includes all organisms, climate, soil, rocks, and nonliving things in one area. food web is a complex network of feeding relationships and the flow of energy within/beyond an ecosystem, while a food chain consist of a producer eaten by a consumer, who continues to be eaten until the dominant consumer eats those organisms.