.... There are certain advantages and disadvantages of trading on the net. ? One can buy each and every product sitting at home. ? It saves lot of time. ? Sometimes it saves lots of money too. For example, “ when I registered for this fall term I visited the book store and figured out that the total cost including all the books was $ 390 and when I surfed on the net, the same books I bought on the net for $ 320 including shipping and it was at my doorstep in two days. Thus, I saved 70 bucks sitting at home and saving my time.” ? Also when the companies start their business they give lots of gifts and promotions for .....

.... in France identified another closely related virus that produces AIDS. This such virus became known as HIV-2 and occurs mainly just in Africa. The virus,HIV-1 is spread throughout the world . HIV infects certain white blood cells, including T-helper cells and macrophages, that play key roles in the functioning of the human immune system. The virus attaches to certain molecules found only on the surface of cells. When an AIDS virus enters one of these cells, the virus inserts its genes into the cell's reproductive system and uses to produce more HIV. The infection kills the CD-4 cell and spreads the AIDS viruses other .....

.... to the body, whether it is for function or therapy. The classical and common example is that of the cardiac pacemaker. The range of clinical uses of electrical stimulation has and is growing wider and includes: pain relief (often known as TENS - Transcutaneous Electrical Nerve Stimulation), maintaining or increasing range of movement, muscle strengthening, facilitation of voluntary motor function, and orthotic training or substitution. Functional Electrical Stimulation (FES) is a branch off of electrical stimulation. The term FES is applied to systems, which attempt to restore, lost or impaired neuromuscular function. This wo .....

.... hibachis out of these discarded drums (Doyle, 139). They also used the barren drums to store potatoes and watermelons (Doyle, 139). One man described to his wife how they would bathe and swim in water contaminated with because their superior said it was safe (Brooks, 2). “After the LZ was sprayed, we walked around the perimeter, strung barbed wire all around it, and this stuff [] was blowing all over the place. Most of us drank out of bomb craters, showered in bomb craters…and all that water was polluted with ,” a First Air Cavalry veteran recalled (Doyle, 139). played a very key role in the lives of the American sold .....

.... governments is because of the negative effects they can have on the environment. Acid rain is harmful to the environment because of it's low pH. It can harm the biotic components of earth, and also the abiotic components. It's high acidity degrades soil to the point where it cannot support any type of plant life. Trees in forests are killed over long-term exposure. When these trees are killed, an imbalance in the hydrologic cycle can occur. Without living trees to consume the precipitate, it must be consumed by the earth or any other plants. These will receive an excess of water, causing other problems in the hydrologic c .....

.... about wildly and finds out what the cause is, he or she will do the same; until eventually the idea spreads to the entire population. Some problems that cause these are “overly strict regulations, lack of open communication between the authorities and the residents, as well as inadequate healthy recreational outlets”(Hayes 1). All these issues are things that if performed, can help prevent or calm an outbreak of mass . In the Salem Witch Trials, the “existing difficulties” that led up to the witchcraft theory were ordinary stresses of seventeenth century life in Massachusetts. These include “a st .....

.... in actuality these beauteous pieces of nature we call flowers use sight and smell as attractants for the bees. Plants advertise themselves to who they want to be pollinated by. For instance, some plants such as the honeysuckle and tobacco only give off their potent scent at night, when other plants are inactive. Although during the day these plants may not be the most popular, during the night they serve as quite a feast for many nocturnal moths as well as some bees. Certain insects have developed bonds in which their sole association is with a single plant. The yucca moth and the yucca depend on each other, as do the fig wa .....

.... works when soil is almost completely saturated with water and leaves are not losing much water through evaporation. When the xylem is full of water, the molecules will not move back down the structure, but rather need to be expelled from the plant. They will move, by the process of osmosis, to an areas where there is the least amount of pressure. These areas are usually openings located on plant leaves. Once the water molecules reach the leaves, the excess water will be forced out of the plant by root pressure. This push theory presents two major inconsistencies 1)many plants exhibit no root pressure and 2)root pressure is not str .....

.... out, forming clouds that rise high in the atmosphere or swirl around the slopes of towering volcanoes. Local patches of early morning fog can form in valleys. At the Viking Lander 2 site, a thin layer of water frost covered the ground each winter. There is evidence that in the past a denser Martian atmosphere may have allowed water to flow on the planet. Physical features closely resembling shorelines, gorges, riverbeds and islands suggest that great rivers once marked the planet. Mars is smaller and, because of its greater distance from the Sun, cooler than the eearth. It has seasons similar to Earth's because the tilt of its .....

.... 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 i .....