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2 giorni fa · The Cretaceous–Paleogene (K–Pg) extinction event, also known as the Cretaceous–Tertiary (K–T) extinction, was a sudden mass extinction of three-quarters of the plant and animal species on Earth, approximately 66 million years ago. The event caused the extinction of all non-avian dinosaurs.
1 giorno fa · Bibliography. External links. Cretaceous. The Cretaceous ( IPA: / krɪˈteɪʃəs / krih-TAY-shəs) [2] is a geological period that lasted from about 145 to 66 million years ago (Mya). It is the third and final period of the Mesozoic Era, as well as the longest. At around 79 million years, it is the longest geological period of the entire Phanerozoic.
2 giorni fa · The geologic time scale or geological time scale ( GTS) is a representation of time based on the rock record of Earth. It is a system of chronological dating that uses chronostratigraphy (the process of relating strata to time) and geochronology (a scientific branch of geology that aims to determine the age of rocks).
15 mag 2024 · Definition. A tertiary source consolidates and organizes primary and secondary source materials into one source in order to facilitate quick access to information.
- Robert V. Labaree
- 2009
1 giorno fa · 1 Caratteristiche. 2 Geografia fisica. 2.1 Fiumi. 2.2 Laghi. 2.3 Coste. 2.4 Ambiente. 3 Storia. 3.1 Epoca antica: Sanniti e Romani. 3.2 Medioevo: dai Longobardi al Contado di Molise (VIII - XIII secolo) 3.3 Epoca moderna: dal XVI secolo al 1806. 3.4 Castelli e casate del Molise ai tempi del Contado del Molise (1221-1806)
25 apr 2024 · Tertiary Source: A Wikipedia article about John McGahern. When you make distinctions between primary, secondary, and tertiary sources, you are relating the information itself to the context in which it was created.
3 mag 2024 · Tertiary Sources. Tertiary sources are the general information coverage. They are things such as encyclopedias or dictionaries that are giving general information on the subject, usually a synthesis of the primary and secondary sources. Wikipedia is a very common example of a tertiary source. Other common tertiary sources are ...
