PAPER Topics

... skull. Eight of these bones are interlocking plates. These plates form the cranium. The cranium provides maximum protection with minimum weight, the ideal combination. The other twenty bones make up the face, jaw and other parts of the skull. Another way the brain keeps it self safe is by keeping itself in liquid. Nearly one fifth of the blood pumped by the heart is sent to the brain. The brain then sends the blood through an intricate network of blood vessels to where the blood is needed. Specialized blood vessels called choroid plexuses produce a protective cerebrospinal fluid. This fluid is what the brain literally floats in. A third protective measure taken by the brain is ...

... the modern world took shape. The global ecosystems acquired their present configuration and prominent topographic features assumed the forms we are familiar with today. No mass extinction marked the transition from the Paleogene to the Neogene. During the 24 million years of the Neogene, however, life ad Earth’s physical features have changed significantly. The most far-reaching biotic changes were the spread of grasses and weedy plants and the modernization of vertebrate life. Snakes, songbirds, frogs, rats and mice expanded dramatically too, and humans evolved from apes. The Rocky Mountains and the less rugged Appalachians took shape during the Neogene time, as did the imposing Hi ...

... many believe an American flag should be placed on the planet of Mars. The Americans have greatly contributed to the findings on Mars; they have helped figure out that the temperature is cool and that the atmosphere is thin. America’s NASA deeply desires for Mars to be a useful planet. Many take-offs have been launched in recent years to carry out this goal. Mar’s Direct is one plan where a rocket to Mars was to exploit the local resources on the planet. Usually, rockets such as this one, need fuel and oxidizer in order to power-rocket. Once the rocket has taken off, the many discoveries take place. Some studies and travels such as the aforementioned show that life is not yet possib ...

... programs that I will discuss with you. The Spaceguard program is sponsored and run by NASA Ames Space Science Division: Asteroid and Comet Impact Hazard. Also under the direction of Dr. Tom Gehrels the University of Arizona has the Spacewatch program. NEOs can be either asteroid or comets. Ninety percent of the information that I came across discussed asteroids. Therefore, I will concentrate on asteroids alone. I'm not fully knowledgeable on the subject but I did learn a great deal. What are NEOs? The "Webster's New World Dictionary" states, "Any of the small planets between Mars and Jupiter". The "Funk and Wagnalls Encyclopedia from Infopedia" states, "One of the man ...

... are about 600 - 800 cc. It is though by scientists that our brain size grew over time as were evolved into making complex tools and we became increasingly sophisticated. The human skull is slightly different from that of our primate ancestors, these changes occurred over thousands of years of evolution. Over time the humans skull and teeth have decreased from that of our ancestors. The chimp has much larger canine teeth and a protruding jaw line. A similarities though can be seen on how uniform the layout of teeth are between the humans and chimps, both possess canines, premolars, and molars. Other notable similarities between us and the primates, specifically the chimps is the use ...

... for which something can be done. Types As I have already stated, there are more than 115 different types of arthritis. I will include the six most common forms in this report. Osteoarthritis Osteoarthritis is the most common form of arthritis in Canada. This type is also referred to as "degenerative joint disease", because it is a consequence of the wearing out of the cartilage that covers the end of bones, usually in the major weight bearing joints of the hips, knees, and spine. Joints in the fingers are occasionally involved as well. Osteoarthritis usually occurs later in life and, more often than not, affects only a few joints. It may also occur in a single joint ...

... treatments such as chiropractic to prevent or cure illness. The more rigid and restrictive the policy provisos, the more assurance for the companies that they will maximize their bottom lines. Therefore, patients of alternative therapies as well as doctors must show that such unconventional treatment provides relief and prevention of illness. “The total projected out-of- pocket expenditure for unconventional therapy plus supplements(such as diet pills and megavitamins)was 10.3 billion dollars in 1990. This is comparable to the out-of-pocket expenditure for all hospital care in the United States in 1990($12.8 billion), and it is nearly half the amount spent out of pocket fo ...

... not move. Charges on an object are called static electricity to contrast then with the moving charges in an electric current. How can you disturb the balance of charge on objects so they exert electric force? The easiest way is the same way the ancient Greeks did it – by rubbing the 2 objects together. Rubbing neutral objects together allows charged pieces of matter to move from one object to another. The invisible bits of negatively charged matter that move between objects are called electrons. The words electron, electricity, and electronics all come from the Greek word for amber – elektron. The transfer of electrons explains the electric force that attracts the balloon to ...

... galaxy in the universe was moving away from each other, this meant that the universe was expanding. Hubble found the movement of the galaxies by using a phenomenon known as the Doppler effect. This effect caused bodies moving away from an observer to have a "red-shifted" spectrum (the light spectrum of the body had been shifted closer to red) and bodies moving towards an observer to be "blue-shifted" (Hawking, 1988) The expansion was traced backwards through time to discover that all the galaxies had originated from the same point. It was later believed that all matter spawn from that "center of the universe" discovered by Hubble, by means of some sort of enigmatic portal. Matter would ...

... can eat several different types of sea plants. They can do this because they have a higher tolerance to salt than normal kangaroos. Kangaroos that live in forests have adapted to this climate as well. Their feet are wide to allow them to climb trees. This allows them to eat leaves off of the trees. They also do not have claws as long as other species. There is usually a larger supply of fresh water in the forests. FAMILY STRUCTURE A group of kangaroos living together is called a mob. The dominant male of the mob is called the boomer. The females are called flyers, and the young are called joeys. They joeys of the mob like to play and fight like most other animals. The boom ...