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Term Papers on Science

Gold
Number of words: 914 - Number of pages: 4

.... malleability and it can with stand corrosion. "By at least the fourth millennium BC, gold was found through both placer and vein(lode) mining and by the time of the early cultures from which modern civilization is descended the search for gold was wide spread"(Green 1968). Gold is mainly extracted through mining. It is mainly found in tiny flakes or sands but sometimes is found in nuggets. The largest nugget ever found weighed eight kilograms. "Gold deposits are usually classified as lode, placer, massive or disseminated types" (Colliers Encyclopedia). .....


Haloes Forecast Storms
Number of words: 520 - Number of pages: 2

.... As the sunlight passes through each crystal, the light changes direction, or refracts. The radius of the hale depends on the amount of change in the direction of the sun's light. Usually this is 22 degrees. Since the sun is 1/2 of a degree across, the radius of the halo is 44 sun-widths. Occasionally you may see a second halo at 46 degrees from the sun (that is, with a radius of 92 sun-widths). This is produced by sunlight passing through both the side and bottom of each crystal. Moonlight will also produce a halo, around the moon, with the proper .....


Human Impact On Air And Climate
Number of words: 842 - Number of pages: 4

.... -- factors that can affect the climate significantly but which are not part of the climate system itself. Based on statistical comparisons of reconstructed northern hemisphere temperatures, the best estimates indicate that natural changes in the brightness of the sun and volcanic emissions both played an important role in governing climate variations over the period studied. But over the past few decades, greenhouse gases produced by human activities appear to have had an increasing influence on temperatures. "The anomalous warmth of several recent years appear .....


Hemophilia 4
Number of words: 1146 - Number of pages: 5

.... factor eight. The rest of the 85% have Christmas, which lacks clotting factor nine. An extremely small number of hemophiliacs lack yet another kind of clotting factor. Both A and B forms have also been called the royal disease. Hemophilia was inherited by decedents of England's Queen Victoria and introduced into the royal houses of Spain, Germany, and Russia. Hemophilia A and B are caused by genes that are sex linked and recessive. A defective gene on the X chromosome, one of the two chromosomes, that determine a person's sex. The Y chromosomes which h .....


Global Warming -.
Number of words: 707 - Number of pages: 3

.... gas emissions worldwide and will prevent global warming. Science Is global warming occurring? - According to Accu-Weather, the world's leading commercial forecaster, "Global air temperatures as measured by land-based weather stations show an increase of about 0.45 degrees Celsius over the past century. This may be no more than normal climatic variation...and several biases in the data may be responsible for some of this increase." - Satellite data indicate a slight cooling in the climate in the last 18 years. These satellites use advanced technology and .....


Hammerhead Sharks
Number of words: 965 - Number of pages: 4

.... head shaped like a shovel the bonnethead rarely grows more than four feet long. This shark is commonly seen inshore. 3. Smooth hammerhead (Sphyrna zygaena)-Bronze with dusky fin tips, it can grow to thirteen feet. 4. Great hammerhead (Sphyrna mokarran)-Attaining a length of a possible 18 feet, this is the largest and most dangerous of all the hammerheads. One of the most interesting things about the hammerheads is the unique shape of their heads. Ever since scientists started to study the hammerhead they have speculated about the use of the hammer. The ha .....


Eye
Number of words: 2091 - Number of pages: 8

.... over the , the liquid from the gland is drained into the nose through the tear duct at the inner corner of the . Heavy laughter or crying causes muscles in the upper lid to squeeze the lachrymal gland. This produces tears that flow too fast to be drained away. The lashes catch many flying particles that otherwise would enter the . As further protection, the lids automatically close when an object suddenly moves close to the . The eye is made of 3 coats, or tunics. The outermost coat consists of the cornea and the sclera. The middle coat contains the main blo .....


Chlamydia 2
Number of words: 2145 - Number of pages: 8

.... well-known intracellular parasites, rickettsiae, in diagnostic manuals. Until recently, however, there were no reliable and easy tests for chlamydia. Chlamydia prevention and patient care were impeded by the lack of suitable laboratory tests for screening and diagnosis. Such tests are now available. Through education, screening, partner referral, and proper patient care public health workers and health-care practitioners can combine efforts to decrease the morbidity and costs resulting from this infection. Chlamydia is the number one bacterial sexually tr .....



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