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Unformatted text preview: half-life Characteristic time it takes for half of a quantity of a radioisotope to decay. lineage Line of descent. natural selection A process of evolution in which individuals of a population who vary in the details of heritable traits survive and reproduce with differing success. naturalist Person who observes life from a scientific perspective. Pangea Supercontinent that formed about 237 million years ago and broke up about 152 million years ago. plate tectonics Theory that Earths outer layer of rock is cracked into plates, the slow movement of which rafts continents to new locations over time. radiometric dating Method of estimating the age of a rock or fossil by measuring the content and proportions of a radioisotope and its daughter elements. theory of uniformity Idea that gradual repetitive processes occurring over long time spans shaped Earths surface....
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This note was uploaded on 03/04/2012 for the course BIO 1414 taught by Professor Bernal during the Fall '11 term at San Antonio College.
- Fall '11