ENV100Y5 Lecture Notes - Lecture 9: Closed System, Water Cycle, Magma Chamber
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ENV100Y5 Full Course Notes
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Env session 9: earth"s environmental systems and cycles (28-9-15) Read chp 3 case the plight of st. lawrence belugas. The beluga is vulnerable and is an indicator for the great lakes st. lawrence ecosystem. Pollutants comes downstream from great lakes: agrochemical hypoxia (low oxygen), eutrophication, organochlorides (eg pcbs) A system is a portion of the universe that can be separate from the rest, for the purpose of studying changes that occur within it, under changing conditions. To solve environmental problems, all appropriate systems must be considered. Environmental entities are complex systems that interact with each other. Network of relationships among components that interact with and influence one another. Many other disciplines use a systems approach and general system theory. Environmental systems tend to be complex (ex far, city, watershed) Major earth spheres: geosphere, atmosphere, hydrosphere, biosphere. Different types of systems based on properties of boundaries. Closed system: energy can be exchanged across the boundaries, but matter cannot.
