BIOLOGY 1101 Lecture Notes - Lecture 24: Eutrophication, Soft Drink, Heterotroph
27 Nov 2016
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Document Summary
Biochemistry: how different organisms are linked over time and across geographic space by chemical interactions (nitrogen and phosphorus), changing the chemical balance of an ecosystem changes the biological balance, damaged ecosystems can be repaired to some extent. If so how would it affect the environment: can throw the ecosystem balance off resulting in the community crashing after a series of events, sometimes they can be toxic which will harm an ecosystem in one step. Eutrophication: the increase in nutrients in an ecosystem, particularly nitrogen and phosphorus, often leads to the rapid growth of algae and bacteria in aquatic ecosystems. These organisms then consume much of the oxygen, leading to large die-offs of animals. The dose is the poison but the solution is not dilution: low/balanced concentrations. Some pollutants can bioaccumulate in the ecosystem, though found in the environment at low concentrations eventually accumulates in organisms. Nutrients are locked in a many different large organic molecules.
