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8 hours ago · Cataract surgery is the most common application of lens removal surgery, and is usually associated with lens replacement. It is used to remove the natural lens of the eye when it has developed a cataract, a cloudy area in the lens that causes visual impairment. [ 4 ][ 10 ] Cataracts usually develop slowly and can affect one or both eyes. [ 4 ]
1 day ago · A diacritic (also diacritical mark, diacritical point, diacritical sign, or accent) is a glyph added to a letter or to a basic glyph. The term derives from the Ancient Greek διακριτικός (diakritikós, "distinguishing"), from διακρίνω (diakrínō, "to distinguish"). The word diacritic is a noun, though it is sometimes used in ...
8 hours ago · Amazon Kindle is a series of e-readers designed and marketed by Amazon. Amazon Kindle devices enable users to browse, buy, download, and read e-books, newspapers, magazines, Audible audiobooks, and other digital media via wireless networking to the Kindle Store. [6]
8 hours ago · Braille (/ breɪl / BRAYL, French: [bʁɑj]) is a tactile writing system used by people who are visually impaired. It can be read either on embossed paper or by using refreshable braille displays that connect to computers and smartphone devices. Braille can be written using a slate and stylus, a braille writer, an electronic braille notetaker ...
1 day ago · Eye contact: Eye contact plays a large role in conversational turn-taking, perceived attention and intent, and other aspects of group communication. [32] While traditional telephone conversations give no eye contact cues, many videoconferencing systems are arguably worse in that they provide an incorrect impression that the remote interlocutor is avoiding eye contact.
1 day ago · African American slaves in Georgia, 1850. To best understand African American culture, one must first understand who African Americans are. African Americans are the result of an amalgamation of many different countries, [34] cultures, tribes and religions during the 16th and 17th centuries, [35] broken down, [36] and rebuilt upon shared experiences [37] and blended into one group on the North American continent during the Trans-Atlantic Slave Trade and are now called African American.
8 hours ago · Genetics is the study of genes, genetic variation, and heredity in organisms. [ 1 ][ 2 ][ 3 ] It is an important branch in biology because heredity is vital to organisms' evolution. Gregor Mendel, a Moravian Augustinian friar working in the 19th century in Brno, was the first to study genetics scientifically. Mendel studied "trait inheritance ...
