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Why are manhole covers round?

Circles have no angles, which means that no matter how a circle is turned, it fits flush with an opening. The diameter of a circle also insures that it has a wide middle that prevents it from fitting through a manhole opening if tipped. Shapes with angels must have their sides perfectly aligned in order to fit securely into the opening. Plus, if turned diagonally and held upright, they could be dropped into a square or rectangular-shaped manhole.\nIt is also easier for workers to slide round manhole covers back into place because the circular shape does not have to be positioned in any specifi..

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What countries are Imperialist?

Russian President Vladimir Putin, for example, took control of Crimea after invading Ukraine in 2014 as a means of increasing Russia's territorial size and strength. In this respect, Russia is again demonstrating Imperialist intent, which is essentially the designation of other countries as enemies to be conquered.The United States has frequently been criticized for its invasion of Afghanistan as a clear attempt to increase the global strength and dominion of the American Empire. The plans for such an empire were drawn up in the 1940s, with Israel becoming a strategic colony in the Middle..

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What is the "Life Application Study Bible?"?

In addition to the life-application texts, the book provides character profiles, charts and maps. The book also provides timelines that explain the major events that occurred when each book of the Bible was written. Some versions also include supplements for church workers to help them lead congregations and minister to new believers.

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What is Habitat for Humanity?

Habitat for Humanity, or simply Habitat, builds or renovates homes and sells them to disadvantaged families for no profit. Habitat enlists the help of volunteers and regional affiliates to assist in every aspect of home construction and donation collection. As of November 2014, Habitat has constructed or fixed up more than 800,000 houses worldwide since 1976. This organization has provided safe homes for more than 1.5 million people.

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What does it mean when three dots are shaped in a triangle?

In mathematical proofs, three dots arranged in a triangle can represent either the "therefore" sign or the "because" sign. The "therefore" sign appears as an upright triangle made of three dots, with one dot on top and two on the bottom. The "because" sign is the opposite, with three dots arranged into an inverted triangle, two on the top and one on the bottom. These symbols can be used in syllogism with either numbers, letters or words. For example, one could say that because all Gods are immortal, and because Jupiter is a god, therefore Jupiter is immortal, with the "because" and "therefore"..

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What are some highly rated books about the history of the U.S. economy?

Written by Michael Lind, "Land of Promise" recounts America's economic history beginning with the Revolutionary War period and ending with the Great Recession in 2008. It is considered well-written and highly organized by most reviewers.\nJohn Steele Gordon's "An Empire of Wealth" covers an earlier period of history, beginning in colonial times and covering economic history through Sept. 11, 2001. Reviewers were impressed with the explanations of statistics he included in his book, but some felt he didn't include enough details of the period directly after World War II.

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What are examples of deductive reasoning?

Deductive reasoning is a scientific method used to prove a hypothesis or deduct a truth based on logic. The process works only if the facts in the initial premise are sound and beyond debate. A major component of deductive reasoning is the assumption that if something is true for one member of a class or group, then the same thing is true for all members of that class. For example, if it is true that all normal dogs have four legs, and it is also true that a poodle is a dog, then a poodle has four legs. Likewise, because whales are warm-blooded, and orcas are whales, then orcas are warm-bloode..

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What are some examples of cognitive perspective?

Cognitive perspective examines how people perceive, think, remember, problem solve and speak. Unlike behaviorists, cognitive psychologists assert that there are non-observable internal mental states, such as motivation and desire. They also believe that memory structures determine the perception and storage of information.\n \nCognitive psychology is a theoretical perspective and encompasses categorization, knowledge representation, memory and language. The most famous psychologists who studied cognitive perspective were Jean Piaget, Noam Chomsky, Lev Vygotsky and Jerome Bruner.

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Where do ghosts live?

The regions that ghosts occupy vary and depend on the capabilities and spiritual powers of the ghost. Ghosts who experience or who have an increase in spiritual power become more subtle, which means that they are found in a deeper type of negative region, associated with the Patal region of Hell. Ghosts who possess very little spiritual power are generally found in Nether regions.

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What are the names of Adam and Eve's children?

According to the creation stories of the Abrahamic religions, God created Adam and Eve, the first man and woman. In the Book of Genesis, their eldest son, Cain, kills his brother Abel in a fit of jealousy and anger, thus becoming the first murderer. Seth was born after the death of Abel and lived for 912 years.

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