EESA01H3 Lecture : In Class Lecture Notes
31 Oct 2010
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Document Summary
Eutrophication: the process of nutrient over-enrichment, blooms of algae (consuming bacteria and . ". needs lots of oxygen - leaving none for fish), increased population of organic matter, and ecosystem degradation. Micro algae (din flagellates and diatoms) can release toxic substances. Natural, but can be triggered by nutrient pollution. Leads to fish/shellfish poisoning or toxin accumulation - passed to humans. In lithosphere - mined and brought out to atmosphere. Key component of cell membranes, dna, atp (energy) Chemical cycling driven by: solubilization, precipitation, assimilation, decomposition. Mining of phosphorus-bearing rocks for fertilizer production. - mercury cycle operates interpersonally - remove mercury from lithosphere burned along with fossil fuels put it in atmosphere. Similar to water (liquid, solid - in rocks, fossil fuels, gas - breathing mercury vapour is extremely dangerous) Can remain in atmosphere for more than a year. Biggest exposure to the environment diet. Warm more energy than cold substance. Warm becomes cooler, energy is leaving.
