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The 1920s (pronounced "nineteen-twenties" often shortened to the "' 20s" or the "Twenties") was a decade that began on January 1, 1920, and ended on December 31, 1929. . Primarily known for the economic boom that occurred in the Western World following the end of World War I (1914–1918), the decade is frequently referred to as the "Roaring Twenties" or the "Jazz Age" in America and Western ...
The 1920s was a period of social revolution, coming out of World War I, society changed as inhibitions faded and youth demanded new experiences and more freedom from old controls. Chaperones faded in importance as "anything goes" became a slogan for youth taking control of their subculture. [ 75 ]
Advances in biology led to large increases in food production, as well as the elimination of diseases such as polio. A massive amount of new technologies were developed in the 20th century. Technologies such as electricity , the incandescent light bulb , the automobile and the phonography , first developed at the end of the 19th century, were ...
Related changes; Upload file; Special pages; Permanent link; Page information; ... Pages in category "1920s in biology" This category contains only the following page.
Inputs to the modern synthesis, with other topics (inverted colours) such as developmental biology that were not joined with evolutionary biology until the turn of the 21st century [103] Biologists, alongside scholars of the history and philosophy of biology, have continued to debate the need for, and possible nature of, a replacement synthesis.
The history of biology traces the study of the living world from ancient to modern times. Although the concept of biology as a single coherent field arose in the 19th century, the biological sciences emerged from traditions of medicine and natural history reaching back to Ayurveda, ancient Egyptian medicine and the works of Aristotle, Theophrastus and Galen in the ancient Greco-Roman world.
The firm pointed to recent changes in the 30-year fixed mortgage rate, which fell this year before climbing to nearly 7% as markets adjusted their expectations for borrowing costs amid sticky ...
The 20th century changed the world in unprecedented ways. The World Wars sparked tension between countries and led to the creation of atomic bombs, the Cold War led to the Space Race and the creation of space-based rockets, and the World Wide Web was created.