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Tree remains that have undergone petrifaction, as seen in Petrified Forest National Park. In geology, petrification (from Ancient Greek πέτρα (pétra) 'rock, stone') is the process by which organic material becomes a fossil through the replacement of the original material and the filling of the original pore spaces with minerals.
Terraria has support for mods, which is facilitated by the third-party tModLoader. [12] [13] [14] It later received official support when it was released as free downloadable content alongside the "Journey's End" update on Steam in 2020. [15] Mods for Terraria vary widely in their scope, content, and purpose. Some, such as Thorium and Calamity ...
Petrified wood has limited use in jewelry, but is mostly used for decorative pieces such as book ends, table tops, clock faces, or other ornamental objects. [16] A number of Ancestral Puebloan structures near Petrified Forest National Park were constructed of petrified wood, including the Agate House Pueblo. [ 17 ]
Petrification is associated with the legends of Medusa and the Svartálfar among others. In fairy tales, characters who fail in a quest may be turned to stone until they are rescued by the successful hero, as in the tales such as The Giant Who Had No Heart in His Body, The Water of Life and The Dancing Water, the Singing Apple, and the Speaking Bird, as well as many troll tales.
Foxfire Books series, from the magazine of the same name, popular with the 1970s back-to-the-land movement; Steal this book, by yippie Abbie Hoffman, 1971, a guide to living with little or no money, and to living outside the rules of establishment culture; Our Bodies, Ourselves, by the Boston Women's Health Book Collective, 1973
Atropa bella-donna has a long history of use as a medicine, cosmetic, and poison. [14] [4] [15] Known originally under various folk names (such as "deadly nightshade" in English), the plant was named Atropa bella-donna by Carl Linnaeus (1707–1778) when he devised his classification system.
Immunology is a branch of biology and medicine [1] that covers the study of immune systems [2] in all organisms.. Immunology charts, measures, and contextualizes the physiological functioning of the immune system in states of both health and diseases; malfunctions of the immune system in immunological disorders (such as autoimmune diseases, hypersensitivities, [3] immune deficiency, [4] and ...
In geology, silicification is a petrification process in which silica-rich fluids seep into the voids of Earth materials, e.g., rocks, wood, bones, shells, and replace the original materials with silica (SiO 2). Silica is a naturally existing and abundant compound found in organic and inorganic materials, including Earth's crust and mantle ...