.... birth. (Newton's speculations about atoms in the Principia were carefully copied by hand into Dalton's notebooks.) Atoms of an element cannot be created, destroyed, broken into smaller parts or transformed into atoms of another element. Dalton based this hypothesis on the law of conservation of mass and on centuries of experimental evidence. Some of the details of Dalton's original atomic theory are now known to be incorrect. But the core concepts of the theory (that chemical reactions can be explained by the union and separation of atoms, and that these atoms have characteristic properties) are foundations of modern physica .....

.... of blubber that aids in bouyancy, helps to preserve body heat, and is a source of stored energy. A cetacean’s skin is free of sweat glands, oil glands, or hair, and feels much like smooth, wet rubber to the touch. Cetaceans, like other mammals, have lungs. They breathe air through a single nostril, or pair of nostrils, located on the top of the head; but contrary to a popular image, they do not “spout” water when they exhale. The visible spout, the size and shape of which is unique to many species, is simply water vapor in the lungs and a small amount of water present in the depression around the blowhole, which is blown .....

.... been well studied, report that they see most patients in the fall and early spring. Epidemics do not occur, but doctors have reported clustering of cases. Transmission: EBV, the virus that causes most cases of , infects and reproduces in the salivary glands. It also infects white blood cells called B cells. Direct contact with virus-infected saliva, such as through kissing, can transmit the virus and result in . Someone with , however, does not need to be isolated. Household members or college roommates have only a slight risk of being infected unless they come into direct contact with the patient's saliva. A person is infectious .....

.... production over large expanses in the Northern Hemisphere, this could occur through acute climatic conditions which chilling or freezing temperatures occurring for brief periods during the growing season which could destroy crops or lower production. As result of the variety of potential physical and societal disruptions to agriculture from a large-scale nuclear war, agriculture in the Northern Hemisphere could be shut down or significantly reduced for the first growing season after war and maybe several growing seasons. Only the major grain-producing countries such as United States, Canada, and Australia had enough stored food t .....

.... functions have multiple roots. Failure to choose an initial value that is close to the root could result in finding a the wrong root or wasting a lot of time doing multiple iterations while getting close to the actual root. On some occasions, the program cannot find a root to an initial guess that is placed into the program. In some instances Mathmatica could not find the root to the function, like if it is a parabola with its vertex is placed right on the y axis with its roots an equal distance away in both directions. In a case like this, the computer could not decide which root to work towards so it gave an indeterminate .....

.... voles, and mice are very common in the deciduous forests. Amphibians are just as common such as frogs, toads, and salamanders. Threats to this biome are happening more frequently. Acid rain and air pollution is threatening plants and animals. Deer population has become a bigger threat over the last decade. Because the deer have not enough predators to the area, their size is over growing. Tree bark is being striped from the tree and wild flowers are being eaten in large quantities. Due to the hunting seasons and hunting being illegal in parks it is harder for man to lower the population of the deer. Logging is also becom .....

.... perspiration on our skin is a clue to what is happening. The movement of the windsurfer has a different explanation. The windsurfer is propelled along by a sail which collects mechanical energy from the winds that sweep along the water. This energy has been produced by the sun which warms the earth's surface and sets the air above in motion. The sun's heat comes to the earth as a form of radiant energy. When the heat reaches the surface of the earth, it causes the land or seas to rise in temperature. The sun is very hot. Infact, the center of the sun can reach temperatures of up to 27 million degrees Fahrenheit. .....

.... reduce the cost and help the project to meet its objectives ahead of schedule. The project was estimated to have detailed maps of all of the chromosomes and know the location of most of the human Genes by 1996. Researchers have successfully located the gene and DNA sequence for Huntington’s Disease on Chromosome 4 and have created a genetic test to determine if a person carries this gene. "The child of a person with Huntington's has a 50% chance of inheriting the gene, which inevitably leads to the disease." Once an individual acquires the gene, it is only a matter of time before they acquire the disease. Because the medical .....

.... followed traits for the P generation, F1 generation, and F2 generation. The P generation is the original true-breeding parents. Their hybrid offspring is the F1 generation, the first filial. The F2 generation is the second filial and is the self- pollination of the F1 hybrids. It was predominantly his research on the F2 generation that led to Mendel’s Law of Segregation and Law of Independent Assortment (Campbell, 1996). Mendel’s Law of Segregation states that alleles sort into separate gametes. He formed this through performing monohybrid crosses. The F2 generation will have a 3:1 phenotypic ratio. By considering mor .....

.... sister’s medical studies. In 1891, when Marie was twenty- four years old, she was invited to live with Bronya upon her completion of medical school. This enabled Marie to enroll at the University of Paris and begin her own dream of becoming a university student. Marie studied mathematics, physics, and chemistry. It was upon enrollment in college when she changed her first name from Manya to Marie. After three years of her education at college, she graduated top of her class and earned her degrees in physics and mathematics. The year that Marie graduated with honors from the University of Paris, she met Pierre Curie, who also .....