The question of who discovered the Americas and when has been a very debatable topic. Its believed that in 984-1000 A.D. Viking voyagers led Leif Eriksson first set foot in the Americas. It is unsure if Eriksson sailed off course on his way home to Greenland or if he intended to go to these lands after hearing of them by word of mouth from traders. Its believed that Eriksson is the first European to reach these lands and explored the region. After spending a winter Ericksson sailed back home to Greenland
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philosopher Joseph Priestley (1733 – 1804) discovered oxygen in experiments‚ isolated the gas‚ and described its function in combustion and respiration. He also invented soda or carbonated water by dissolving fixed air with water. Unaware of the significance of his discoveries and because of his stubborn refusal to abandon the phlogiston theory‚ he named the new gas “dephlogisticated air.” However‚ it would be the French chemist Antoine Lavoisier (1743 – 1794) who gave the gas its present name‚ and was
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the movement of water from in a cell to outside it or from outside the cell to inside it. The 0% salt concentration and the 5% salt concentration showed a mass increase because there was a higher water concentration outside of the potato cells than inside them. To solve this the potato cells experience osmosis to balance the concentration of water in the cell and outside it. Since there is a higher water concentration outside the cell the water must move into the cell to balance the water concentration
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JULY‚ 03‚ 2013 Manila‚ Philippines – Divers from the National Museum and the Philippine Coast Guard (PCG) have discovered a ship loaded with artifacts that sank during the Spanish period off Culasi Point in Roxas City. Lieutenant Commander Algier Ricafrente‚ PCG Public Affairs chief‚ said that National Museum research divers Bobby Orillaneda and Ligaya Lacsina and French divers from the Far Eastern Foundation for Nautical Archeology sought the assistance of the PCG in the ongoing search of the
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phenomenon or things happen. They just accept it without knowing the cause of it. And there is no meaning in it if we just accept things without reasons. That’s why this experiment is conducted so that we may know how things happen in the level of cells. Objectives: 1. To demonstrate the principle of Osmosis and to apply it with actual life situations. Materials and Methods: • Materials: Compound microscope Glass Slide Cover Slip Tissue Paper Blade Rhoeo discolor Leaves
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plasmoylsis and turgor in plant cells Investigation * Get a single layer of plant cells. If you are using red onion‚ cut a 1 cm square from a fleshy piece of onion and then peel off a single layer of the red cells. If you are using rhubarb‚ peel a piece from the epidermis. If you are using toadflax peel a piece of the lower epidermis of a leaf. * Place the strip on a slide and cover it with a drop or two of distilled water. Add a cover slip. * Look at the cells through a microscope. Start
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Was mathematic discovered or created. To elaborate on this more‚ we need to define the terminology first. Discovered is the thing always exist. Someone found it. Invented is the thing did not previously exist. Someone created it. What about mathematics? Mathematics is a tool‚ a model. It is something that we can use to describe or model parts of reality‚ or any other system based on quantifiable things. So‚ is mathematic being created or discovered? People have debated about this over
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Grant Wright 10/5/12 Carleton 5th The Vikings Discovered America In 1492‚ Christopher Columbus sailed the ocean blue‚ allegedly. There are quite a few claims on who discovered America; most of them predate Columbus. One recent claim is by Gavin Menzies‚ that China discovered America. I‚ however‚ refute this claim. It’s clear the Vikings discovered out current home from the story of Leif Erikson‚ Vinland‚ and that Menzies’ claim is just absurd. During Bjerni Herjolfssen’s journey to Greenland
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Pg. 03 HEADLINE: The Pinta‚ Santa Maria‚ and a Chinese junk? BYLINE: By Amanda Paulson Staff writer of The Christian Science Monitor A new book claims the Chinese discovered America in 1421‚ but historians refute thesis. To the Norsemen‚ the Japanese‚ and the Carthaginians; to the Irish‚ the Africans‚ and a long list of others who‚ it is claimed‚ crossed the oceans to America long before 1492‚ add one more: the Chinese. They toured up and down both coasts of the Americas‚ established colonies
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1. Replace the rule-of-thumb work methods with methods based on a scientific study 2. Scientifically select‚ train‚ and develop each worker rather than passively leaving them to train themselves 3. Cooperate with the workers to ensure that the scientifically developed methods are being followed 4. Divide work nearly equally between managers and workers‚ so that the managers apply scientific management principles to planning the work and the workers actually perform the task. 1. Replace the rule-of-thumb
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