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…Medieval Castles Medieval Castles were huge protection camps made to protect the king. They had every kind of defense known to medieval man. From murder holes, to arrow-loops, a castle had it. Medieval castles were usually built on a high rocky…

…. Near the bottom we placed a siv to let juices drain through into the bottom 2-liter. Then we stacked materials and organisms on top of each other until it was about 20 cm tall. We then randomly poked holes into the sides of the pop bottles to let air…

…. If it is sunny it burns. 9. The Hole In The Ozone Layer - Thanks to industrial countries like Germany and the United States, we have a great big hole hanging over our heads which exposes us to the harmful rays of the sun. I go outside for two minutes and I am…

…can make are too weak to hold the oxygen there. In gas chromatography molecules are forced to pass through a porous medium, which acts as the sticky surface in the previous example. A porous medium is a material that has microscopic holes in it. The holes…

…Laboratory in Wood Hole, Massachusetts after obtaining his doctorate for experimental embryology from the University of Chicago in 1916 even though he was a black man. At the Marine Biological Laboratory, Dr. Ernest Everett Just conducted thousands of experiments…

…are : the ozone holes, global warming ( or green-house effect), acid rain ... The ozone layer is a layer of gases which stop harmful radiation from the sun protecting the earth. Recent research shows that there is a hole in part of the ozone layer which is caused…

…. In recent years, scientists have measured a seasonal thinning of the ozone layer primarily at the South Pole. This phenomenon is being called the ozone hole. The ozone layer naturally shields Earth's life from the harmful effects of the sun's ultraviolet (UV…

…of stream; 3)         A surber sample was used, the size of the holes in the net was 1 mm2, while the size of the quadrat was 0.1 m2 (this size prevents the invertebrates from passing through the holes, but small particles of fine sand could); 4…

…begins with this sort of balance of imagery even in the first lines of the first chapter of the book. "In a hole in the ground there lived a hobbit. Not a nasty, dirty, wet hole, filled with the ends of worms and an oozy smell, nor yet a dry, bare, sandy…

…that govern the universe in his theories. He followed in the footsteps of Albert Einstein and Galileo Galilee. Albert Einstein's Theory of Relativity implied that the universe started with a "Big Bang" and will end with a black hole. It was Hawking's theory…