BIO220H1 Lecture Notes - Lecture 9: Phosphorus Cycle, Carbon Cycle, Nitrogen Cycle
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BIO220H1 Full Course Notes
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Document Summary
Cold war after 1945 after the world war 2 after the soviet union obtained atomic weapons. Both america and the su were expected to use the nuclear and atomic weapons. The flow in energy in nutrients through the ecosystem. The duck and cover drill: to protect yourself, hands on back of neck and crawl under the desk. You release gamma radiation in the form of cesium 137 and measure all derivative nuclear isotopes through the surrounding ecosystem: tracing connection of how elements and energy are flowing through communities. There was human intervention: large organic molecules are being synthesized, the molecules are being decomposed by decomposers, chemicals elements aren"t being created or destroyed they are being cycles rom one compartment to the next. We are accelerating the movement of the co2 into the atmosphere from the earth. Deforestation: for hunting, agriculture, removing agricultural waste, reverting to forest without fire and intervention. Carbon is released into the air by fire.
