5.3.1 Ecosystems define the term ecosystem; - ppt video online download
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Ecosystem The term ecosystem was coined by A.G. Tansley (1953). Ecosystem is defined as a natural unit consisting of all plants, animals and micro-organisms. - ppt video online download
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Ecology Definition: the study of the relationships between living things and between living things and their environment. Origin of term: From the greek. - ppt download
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CHAPTER 18. Section 1 - Objectives Identify a key theme in ecology. Describe an example showing the effects of interdependence upon organisms in their. - ppt download
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