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Inventions And Their Importance

... but more of it. They would play board games, tell stories, and pay a lot more attention to their hobbies. This is what brings me to my thesis statement: In-home communication inventions have greatly affected the ways of modern living, and I intend to prove that in this report. People invent for many reasons. Some hope to make money, others invent to make life more convenient, and some even invent to satisfy their curiosity of their urge to create (7,364/5), but satisfying economic needs, was one of the main reasons for invention. The e ...

Number of words: 1810 | Number of pages: 7

Atom Book

... to size and see what it's like. We're going to into the Helium atom today. An atom is made of little things called protons, nuetrons, and electrons. Protons have a positive charge, neutrons have no charge, and electrons have a negative charge. Electrons travel around the center of the atom, which is called the nucleus. Kind of like how Earth revolves around the sun. Protons and nuetrons make up the center of the atom. The atom has an atomic number. Scientists find that number by counting how many protons are in the nucleus. In this case He ...

Number of words: 280 | Number of pages: 2

How Eagles Live

... world except for South America. They locate fish by following seabirds, and then they rob osprey of fish catches, they also eat carrion. The bald eagle is an endangered species and is only numerous in Florida, where there are breeding sanctuaries. The bald eagle makes its nest with a bulky platform of sticks in a tall tree, and normally has between 2-3 white eggs per season. The golden eagle has the scientific name of aquila chrysaetos and is named for its golden appearance. It is a member of the hawk family. It has a wingspan of ...

Number of words: 605 | Number of pages: 3

Killer Whale, The Mighty Dolphin

... as the "saddle patch" for obvious reasons. Males weigh up to eight-thousand pounds while females weigh closer to four-thousand. The Killer Whale is also very easily identifiable as male or female. The male's dorsal fin can reach seven feet tall and stands straight up off the middle of his back. The female's dorsal fin is much shorter, usually about three feet, and instead of standing straight, forms a crecent arc on her back towards the tail. Although Killer Whales are not used for oil-based products they have over and over again been found ...

Number of words: 399 | Number of pages: 2

Frog Disection

... the large intestine where water is reabsorbed. Then the waste is eliminated through the cloaca and the anus. (Cooper, H, Hays, S, Walker.D, Linden R 1982) The frog has three lobed livers. The functions of the liver, is to release digestive enzymes to help the stomach and the small intestine with mechanical digestion. The gall bladder stores bile, which breaks down the partially digested foods that, enters the small intestine. Bile has no enzymes but still manages to break down fat into tiny droplets that are ready for faster chemical breakdo ...

Number of words: 838 | Number of pages: 4

Wind Tunnels

... tunnel works. How Wind Tunnels Work A wind tunnel is a machine used to fly aircraft's, missiles, engines, and rockets on the ground under pre-set conditions. With a wind tunnel you can chose the air speed, pressure, altitude and temperature to name a few things. A wind tunnel is usually has a tube like appearance with which wind is produced by a large fan to flow over what they are testing (plane, missiles, rockets, etc.)or a model of it. The object in the wind tunnel is fixed and placed in the test section of the tunnel and instrument ...

Number of words: 1387 | Number of pages: 6

Global Warming Extended Definition Essay

... is referred to as global warming. The most definite cause of this process has not been determined, yet scientists are aware of its reality and harm to humans. Many scientists believe global warming is caused by the increase of carbon dioxide in the Earth's atmosphere, while other scientists believe that the health threat caused by global warming is due to an unusual interaction between cosmic rays and clouds as well as other natural occurring events. The National Weather Service announced that 1998 was the warmest year (on record on averag ...

Number of words: 1142 | Number of pages: 5

Insomnia

... people suffer from ? The estimates vary, ranging from 20 million to 70 million Americans, from one tenth to one third of the population. If we accept the smallest estimate, that's a lot of tossing and turning. These estimates are usually based on the number of serious cs, the definition of which varies considerably. Some doctors define cs as those who cannot sleep at all; other are willing to categorize cs as all those who merely complain about their sleep. The currently accepted definition, to become known as DIMS (Difficulty Initiat ...

Number of words: 1101 | Number of pages: 5

Down Syndrome

... retardation in Surrey, England when he made the first distinction between children who were cretins (later to be found to have hypothyroidism) and what he referred to as "Mongoloids." Down based this unfortunate name on his notion that these children looked like people from Mongolia, who were thought then to have an arrested development. This ethnic insult came under fire in the 1960s from Asian genetic researchers, and the term was dropped from scientific use. Instead, the condition became called "Down's syndrome." In the 1970s, an America ...

Number of words: 1633 | Number of pages: 6

Adrenal Gland

... of particular importance. The Mineralocorticoid (aldosterone) and Glucocorticoid (cortisol) hormones. Adrenaline affects many different types of tissues throughout the body. The release of adrenaline prevents hypoglycemia (low blood sugar), by binding adrenergic receptors in the hormone releasing cells of the pancreas. Epinephrine is called the “fight” or “flight” hormone. The actions of epinephrine and norepinephrine are generally similar, although they differ from each other in their effects. Norepinephrine constricts alm ...

Number of words: 1019 | Number of pages: 4

Genetic Engineering And DNA Technology In Agricultural Productivity

... enzymes to cut the DNA, and sorting the DNA so that traits and characteristics can be identified. By marking a piece of DNA associated with a specific trait, scientists can determine the location of genes which are important for desirable traits. It is much easier to select plants and animals that have been mapped for important traits than waiting until they are fully-grown. This way, animals and plants are recognized at an earlier state whether or not they will be useful in breeding. DNA fingerprinting also makes it easier to ensure that ...

Number of words: 758 | Number of pages: 3

Simple Machines

... compared to how much useful work is put out by the machine; always between 0% and 100%. Friction- The force that resist motion between two surfaces that are touching each other. What do we use machines for? Machines are used for many things. Machines are used in everyday life just to make things easier. You use many machines in a day that you might take for granted. For example a simple ordinary broom is a machine. It is a form of a lever. Our country or world would never be this evolved if it wasn't for machine. Almost every thin ...

Number of words: 586 | Number of pages: 3

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