GEOL 101: Geobiology II: Lecture 19
GEOL 101: Geobiology II: Lecture 19 101-017
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This 2 page Class Notes was uploaded by Natalee Stanton on Monday February 29, 2016. The Class Notes belongs to 101-017 at University of South Carolina taught by in Winter 2016. Since its upload, it has received 24 views. For similar materials see Geology 101-017 in Geology at University of South Carolina.
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Date Created: 02/29/16
GEOL 101 Geobiology – Life Interacts with the Earth Part II Geobiological events in earth’s history Radiation of life – the Cambrian explosion Marine life o Evolutionary radiation o Work of natural selection o All major groups formed o Advent of shells on body Mass extinctions of Phanerozoic life o Mass extinction at 429 Ma o Mass extinction At 364 o End – Permian mass extinction – 250 Ma o Mass extinction at 208 Ma o End – cretaceous mass extinction – 63 MA When the dinosaurs died off Astrobiology – the search for extraterrestrial life o Places to look for extraterrestrial life Habitable zones around stars Environments in our solar system Mars Other places? Sample Exam Questions Organisms that produce their own energy are referred to as __. a. Autotrophs b. Chemotrophs c. Phototrophs d. Heterotrophs The pathway through which a chemical element or molecule moves between the biologic and environmental components of an ecosystem is called a ____. a. Biogeochemical cycle b. Biomicrobial cycle c. Geometabolic cycle d. Geosynthesis cycle Sedimentary features that form from the interaction of microbes with their environment are called___. a. Nodules b. Stromatolites c. Branching columns d. laminations Ecosystems are composed of ___ and ___ that function in a balance manner. a. Multicellular organisms, singlecelled organisms b. Plants, animals c. Organisms, plants d. Organisms, geologic components
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