.... talks the "p" and "s" sounds come out. Condenser microphones are becoming more and more intricate. First of all many microphones contain little batteries about the size of a hearing aid. The batteries last a very long time. The television field uses around four kinds of microphones as basic equipment; the hand-held omnidirectional, the tiny lavalier mic, which is used by clipping on clothing, a wireless microphone called the transmitter mic, and the shotgun mic. The Omnidirectional Microphone comes in many different shapes and sizes. They are used when the background sound is normally low. They usually work by pointing the mic directly at the source of the sound. This ....

.... global experiment by changing the face of the entire planet. We are destroying the ozone layer, which allows life to exist on the Earth’s surface. All of these activities are unfavorably altering the composition of the biosphere and the Earth’s heat balance. If we do not slow down our use of fossil fuels and stop destroying, the forests, the world could become hotter than it has been in the past million years. Average global temperatures have risen 1 degree Fahrenheit over the last century. If carbon dioxide and other greenhouse gases continue to spill into the atmosphere, global temperatures could rise five to 10 degrees by the middle of the next century. ....

.... the reason, we know that the outbreak began there and spread outward. While it did go west, it spread in every direction, and the Asian nations suffered as cruelly as anywhere. In China, for example, the population dropped from around 125 million to 90 million over the course of the 14 century. The plague moved along the caravan routes toward the West. By 1345 it had made it’s way to the lower Volga River. By early 1347 it was in Constantinople. It hit Alexandria in the autumn of that year, and by spring 1348, a thousand people a day were dying there. In Cairo, Egypt, the count was seven times that. The disease traveled by ship as readily as by land and it wa ....

.... it has a very distinct look to it as well as a specific habitat. It has many related species and it’s geographic distribution is extremely wide and varied. The Aedes aegypti, with regard to both sexes, are generally similar in coloration (Womack 1993). The female adult is noticed by it’s small dark figure that is colored by white markings and banded legs. Its proboscis or snout is mostly black with regard to the white palp tips (Russel 1996). The dorsal pattern of white scales on the scutum is in the shape of a ‘lyre’ with two central based stripes that contrast with the dark scales present on the insect (Womack 1993, Russel 1996). Its wings are dar ....

.... levels below the present ice surface. The deeper layers in the ice core correspond to times in the more distant past. The air bubbles can be analysed for the relative abundance of carbon dioxide to estimate atmospheric carbon dioxide levels at times extending back 160 000 years. Through the ice sheet, we know that 160 000 years ago, carbon dioxide concentrations were about 180 ppm and have presently exceeded 350 ppm. 5) There are mainly 3 major sources of carbon dioxide presently and historically. They are industrial activity, land use change and cement plants. The carbon dioxide from industrial activity mainly comes from fossil fuel burning and is by far the most a ....

.... Tigers like water, and are very good swimmers. Northern Tigers undertake long migrations. These migrations occur when epidemics wipe out the prey populations. This type of migrations happens often. Temperatures down to -45 degrees Celsius are not harmful and do not dampen their activities ( Mammals Multimedia Encyclopedia 1990). Tigers usually live and hunt alone. When they hunt they can leap 5 to 6 or jump as far as 10 meters. Tigers do not usually prey on people, but some do become man eaters. If a Tiger becomes a man eater it is because of a wound, weakness, or just because it is to old. The young accompany their mother on the hunt when they are 5 to 6 months of ag ....

.... has a broad geographical distribution. It has long established that MS is more prominent in colder regions and rare in tropical areas. Maine being a colder climate has shown some of the highest rates of MS.2 There is evidence of a slight increase in MS among first degree relatives--parents, siblings, and children. It is also suspected that the same family members may inherent a genetic susceptibility to MS. While it is possible to inherit a genetic susceptibility to MS, it is not possible to inherit the disease. And even people who have all the necessary genes don't necessarily get MS. The disease, experts believe, must be triggered by environmental factors. So MS is n ....

.... increased. Lead's usefulness stems from the metal's many desirable properties: softness, high density, low melting point, ability to block radiation, resistance to corrosion, readiness to form alloys and chemical compounds, and ease of recycling. Its versatility, as well as its physical and chemical properties, accounted for its extensive use. Lead can be rolled into sheets which can be made into rods and pipes. It can also be molded into containers and mixed with other metallic elements. Lead was used in ancient times for making coinage, art objects and water pipes. One of the first known toxic substances, lead was used by the Romans for lining aqueducts and in glazes on ....