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Score: 4.2/5 (42 votes) The first true seismograph, according to Italian seismologists, was created in 1875 by Italian physicist Filippo Cecchi. The Cecchi seismograph also used pendulums, but it was the first to record the relative motion of the pendulums with respect to Earth's ground motions...
Score: 4.4/5 (38 votes) A cropping system refers to the type and sequence of crops grown and practices used for growing them. It encompasses all cropping sequences practiced over space and time based on the available technologies of crop production (Table 7.1). Cropping systems have been traditional...
Score: 4.2/5 (23 votes) Teachers' Day messages and thoughtsWishing all my teachers a Happy Teachers' Day! On this special day, I would like to thank you for all the efforts you have put in to make me a better person in life. Thank you for being my guide and teaching me life lessons. Happy ...
Score: 4.3/5 (61 votes) Dinosaurs went extinct about 65 million years ago (at the end of the Cretaceous Period), after living on Earth for about 165 million years.How did Dinos go extinct?Geological evidence indicates that dinosaurs became extinct at the boundary between the Cretaceous and Paleogene...
Score: 5/5 (44 votes) Green woodpecker nesting and breeding Green woodpeckers only have one brood of five to seven eggs and usually lay their eggs in May. They usually nest in live trees and will often use the same tree each year, if not the same hole.What season do woodpeckers come out?If the woodp...
Score: 4.1/5 (37 votes) Commercial whaling is the practice of hunting and killing whales for the purpose of selling and trading their meat and other products derived from them. Scientists estimate that 2.9 million whales were killed for commercial purposes in the 20th century, causing the catastroph...
Score: 4.3/5 (74 votes) Abigail was asked to leave the Proctor's home because Elizabeth suspects that Abigail and Proctor have had an affair. Because she is jealous that she is married to John Proctor.Why was Abigail discharged from the Proctor household?Abigail Williams was discharged (fired) ...
Score: 4.9/5 (41 votes) Moses received the Ten Commandments from God and delivered them to the people. Under divine inspiration, he authored the first five books of the Bible, or the Pentateuch: Genesis, Exodus, Leviticus, Numbers, and Deuteronomy.Who instituted the 10 Commandments?Biblical narrativ...
Score: 4.9/5 (55 votes) - A sapper - also known as an elite combat engineer or pioneer - is a combatant skilled in a variety of military engineering duties such as minefield placement or clearing, bridge-building, demolitions, field defenses, and road and airfield construction.Why is a soldier calle...
Score: 4.4/5 (2 votes) Sergei Vasilyevich Rachmaninoff was a Russian composer, virtuoso pianist, and conductor of the late Romantic period.When was Sergei Rachmaninoff born and died?Sergey Rachmaninoff, in full Sergey Vasilyevich Rachmaninoff, Rachmaninoff also spelled Rakhmaninov, or Rachmaninov, (...
