BIO 100 Lecture Notes - Lecture 1: Sympatric Speciation, Allopatric Speciation, Radionuclide
2 Feb 2017
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Can be defined as the accumulation of inherited changes within populations over time. When scientists use the word theory , they are referring to a logical, tested, well-supported explanation for a great variety of facts. ". Stromatolites are rock-like buildups of microbial mats that are generally found in. Co-occurrence with other fossils of known age. The less the radioisotope, the older the specimen. Most common method used by geologists to learn ages of rocks. Radioisotopes and fossils: radiometric dating different numbers of neutrons and therefore a different atomic weight. Isotopes: forms of an element having the same number of protons, but. Theory of plate tectonics: the continents and seafloors form a thin outer layer of solid rock, called crust, divided into giant, irregularly shaped plates that float atop the mantle, a mass of hot, viscous material. Rates of larger scale macroevolution are highly variable and patterns are.
