The word economics s also de rived from the Greek root oikos. Literally, then, ecology is the stud y o[ 'life at home' with emphasis on 'the totality or pat- tern of relations between organisms and their environment,' o cite a standard dic- tionary definition of the word (Merriam Webster's ollegiate ictionory, 1Oth edition, s.v. The word ecologi s derived from rhe Greek oihos, meaning 'household,' and logos, meaning 'study.' Thus, the study of the environmental house ncludes all the organ- isms n it and all the fun ctional processes hat make the house habitable. Advances in the 18th and 19th centuries –balance of nature versus natural selection –recognition of interrelations of organisms within communities. ![]() –Eugene Odum: “structure and function of. This book covers the following topics in plant ecology: Ecology of Roots, Ecology of Stems, Ecology of Leaves, Symbiosis, Pollination, Reciprocal Nutritive Disjunctive Symbiosis, Social Conjunctive Symbiosis, Nutritive Conjunctive Symbiosis, Growth Habits of Plants, Plant Communities, Plant Succession and Applied Ecology.
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