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Arsenic is a chemical element with symbol As and atomic number 33. It is a metalloid with various allotropes and is commonly used in pesticides.
In 1605, Michal Sedziwój publishes the alchemical treatise A New Light of Alchemy which proposed the existence of the "food of life" within air, much later recognized as oxygen. In 1615 Jean Beguin published the Tyrocinium Chymicum , an early chemistry textbook, and in it draws the first-ever chemical equation . [ 43 ]
There is biological variation in the human species – with traits such as blood type, genetic diseases, cranial features, facial features, organ systems, eye color, hair color and texture, height and build, and skin color varying across the globe.
Venus de Milo, at the Louvre. Art history is, briefly, the history of art—or the study of a specific type of objects created in the past. [1]Traditionally, the discipline of art history emphasized painting, drawing, sculpture, architecture, ceramics and decorative arts; yet today, art history examines broader aspects of visual culture, including the various visual and conceptual outcomes ...