GEOS 212 Midterm: GEOS EXAM 3
10 Dec 2016
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Following are the main topics that we have covered since exam #2. In addition to the terms and concepts listed below, please make sure you are familiar with the large-scale processes that we have discussed (for example, realize that elements in marine organisms are directly tied to chemistry of seawater). Also become familiar with the diagrams that we have used. Be sure you understand how food webs work especially like homework. Lecture 19 intro to marine life: energy sources for marine organisms (photosynthesis, chemosynthesis, and respiration) Dna is the blueprint for how organism grows and functions. Information acquired from all ancestors back to beginning of life: physical factors lead to different environments. Elements in rocks, seawater, atmosphere & marine organisms b. Evolutionary events (mya: formation of the earth: 4. 6 by, first life: plants 3. 8 by, first animals/oxygen: 1. 0 by, first corals: 200 my, end of the dinosaurs: 65 my, first whales: 50 my, last ice age: 20 ky.
