BIOL 2200 Lecture Notes - Agrostis, Organism, Protozoa

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10 Sep 2013
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Composed fo hierarchy of complex systems: subsystems embedded with systems, can be as small as a single organism, or as big as the entire biosphere. Biosphere ecosystem community population organism. Total relationship of organisms to environment and each other (hackel, Study of factors affecting the distribution and abundance of organisms (krebs, 1970). Scientific study of natural environment and the relationship of organism to one another and their surroundings (ricklefs, 2001). There area different ways of looking at the relationships of organisms to their environment: some ecologists classify habitats and examine the relationship between. Over millions of years the activities of organisms have profoundly changed the global environment. Throughout history of life, plants, animals and microorganisms have evolved to carry out different and complimentary functions in natural systems: example. Protozoa feed on tiny bacteria and other organic particles. Algae become green: through bacterial symbionts which evolved into chloroplasts. Some green alage evolved roots and

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