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Bacteria were first observed by the Dutch microscopist Antonie van Leeuwenhoek in 1676, using a single-lens microscope of his own design. He then published his observations in a series of letters to the Royal Society of London. Bacteria were Leeuwenhoek's most remarkable microscopic discovery. They were just at the limit of what his simple lenses could make out and, in one of the most striking hiatuses in the history of science, no one else would see them again for over a century. Only then were his by-then-largely-forgotten observations of bacteria — as opposed to his famous "animalcules" (spermatozoa) — taken seriously.

When was the first time bacteria were observed?
Answer: 1676
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In 1992, Madonna had a role in A League of Their Own as Mae Mordabito, a baseball player on an all-women's team. She recorded the film's theme song, "This Used to Be My Playground", which became a Hot 100 number one hit. The same year, she founded her own entertainment company, Maverick, consisting of a record company (Maverick Records), a film production company (Maverick Films), and associated music publishing, television broadcasting, book publishing and merchandising divisions. The deal was a joint venture with Time Warner and paid Madonna an advance of $60 million. It gave her 20% royalties from the music proceedings, one of the highest rates in the industry, equaled at that time only by Michael Jackson's royalty rate established a year earlier with Sony. The first release from the venture was Madonna's book, titled Sex. It consisted of sexually provocative and explicit images, photographed by Steven Meisel. The book received strong negative reaction from the media and the general public, but sold 1.5 million copies at $50 each in a matter of days. At the same time she released her fifth studio album, Erotica, which debuted at number two on the Billboard 200. Its title track peaked at number three on the Billboard Hot 100. Erotica also produced five singles: "Deeper and Deeper", "Bad Girl", "Fever", "Rain" and "Bye Bye Baby". Madonna had provocative imagery featured in the erotic thriller, Body of Evidence, a film which contained scenes of sadomasochism and bondage. It was poorly received by critics. She also starred in the film Dangerous Game, which was released straight to video in North America. The New York Times described the film as "angry and painful, and the pain feels real."

What was the name of the erotic thriller that shows scenes of sadomasochism and bondage?
Answer: Body of Evidence
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Zinc is a chemical element with symbol Zn and atomic number 30. It is the first element of group 12 of the periodic table. In some respects zinc is chemically similar to magnesium: its ion is of similar size and its only common oxidation state is +2. Zinc is the 24th most abundant element in Earth's crust and has five stable isotopes. The most common zinc ore is sphalerite (zinc blende), a zinc sulfide mineral. The largest mineable amounts are found in Australia, Asia, and the United States. Zinc production includes froth flotation of the ore, roasting, and final extraction using electricity (electrowinning).

What is the symbol for zinc?
Answer:
Zn