GEOL 2155 Lecture Notes - Lecture 6: Jean-Baptiste Lamarck, Water Cycle, Panspermia
18 Jan 2017
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Sequence of carbonaceous siltstones interbedded with fine grained sandstones and shales. Early-middle triassic ichthyosaurs: improved resolution of early revolutionary history. Fossil evidence/data that allow the investigation of broader-scale questions (morphological novelty) scientific/educational value is high. In order to be alive, an organism must be able to: Metabolize (extract energy from its surroundings in some manner) Maintain some sort of homeostasis (regulated internal environment) We need to understand how much time we"re dealing with in order to understand how things have changed. The scientific method is a means of investigating various phenomena that entails postulating and testing hypotheses. Hypotheses can only be conditionally accepted , they are never proven. Scientific method via inductive reasoning: observe - phenomena or facts, form a hypothesis, test the hypothesis (and retest. By examining results of natural processes to deduce the nature"s experimental conditions. Alvarez et al. (1980) observed high iridium concentration at. K-t boundary (iridium occurs in high concentration in meteorites.
