.... regions and 42% in the tropics. For about a millennium, people have benefited from the forests. Forest products range from simple fuelwood and building poles to sophisticated natural medicines, and from high- tech wood based manufactures to paper products. Environmental benefits include water flow control, soil conservation, and atmospheric influences. Brazil's Amozonia contains half of the world's tropical rain forests. The forests cover a region 10 times the size of Texas. Only about 10% of Brazil's rain forests have been cut to date, but cutting goes on at an uncontrollable rate. Since pre-agricultural times the world's .....

.... be available to all pregnant women who wish to take advantage of the technology. Current prenatal testing involves growing fetal cells in vitro and examining them, over one or two months, to see if there are two copies of a particular chromosome, which is normal, or one or three, which is abnormal. A test using Willard's probes would require only a few cells and a few days to detect abnormalities. "I don't think it's beyond the realm of possibility that these kinds of tests could eventually be done by an obstetrician in the office during the early stages of pregnancy," he adds. The determination of gender is another possible u .....

.... is known as the DNA fork. The polymerase enzyme helps the nitrogenous base in a given nucleotide to pick up and attach to a complementary base at the 3' end of the DNA template. The 5'-3' strand of template is duplicated in short segments called Okazaki fragments. Ligase is the enzyme that joins the fragments together. The end product of this is an exact copy of the original DNA. DNA must also be stable, but able to be changed. We know that DNA is stable because of the tightly wound, double helix ladder formation. Also the bonds that keep everything together are hydrogen bonds, one of the stronger bonds. We also know that DNA .....

.... in the troposphere absorb some of the infrared radiation. The gases insulate the Earth, but do eventually allowing some of the heat to escape. The rest of the heat reflects back down to earth where it is bounced back up again. Almost like an ongoing game of ping-pong. With more of the greenhouse gasses being let out into the atmosphere, there are more ping-pong balls going back and forth. Granted, without these greenhouse gasses, the earth would almost freeze and fall into another ice age, but with all this extra heat, the average temperature of the earth will rise causing drastic damage. What sort of damage you ask? It is pre .....

.... solvent. In general, molecules that are structurally similar to the molecules of the solvent have the highest solubility. When a solute is added to a solvent, several physical properties of the solvent change. Its boiling point rises and its freezing point lowers with increasing concentrations of solute. Solutions are similar to other types of mixtures known as colloids and suspensions. Colloids are mixtures of tiny particles of one substance, called the dispersed phase, suspended in another substance, called the dispersion medium. The particles are so small that they remain in suspension indefinitely, unaffected by gravity. .....

.... intravenous infusion to combat the fall in blood pressure associated with types of shock. Norepinephrine is formed in the body from the amino acid tyrosine, and epinephrine is formed from norepinephrine. Mineralocorticoids steroids control the overall body fluid. Mineralocorticoids are critical to regulate concentrations of minerals in extracellular fluids. The major target of aldosterone is the distal tubule of the kidneys. There it stimulates the exchange of sodium and potassium. It reaches the target goal by the distal tubule of the kidneys. Glucocorticoids are used as anti-inflammatory agents. Glucocorticiods are used widely .....

.... is manifested in the claim that at any time there are at least 1 quadrillion living ants on earth(Groliers Œ93). All species of ants are social. They live in organized communities or colonies, which may contain anywhere from a few hundred to more than 20 million individuals. These are organized into a complex system which may contain two or more castes and sub castes which can be roughly organized into three groups. Queens, males and workers. The queen is much larger than the other ants, and has wings until mating. Her primary task is to lay eggs for the colony. Some colonies have one queen; others have up to 5000. Queen .....

.... with absolute obedience, Confucianists believed that men should practice restraint and benevolence in those inferior to them. At the same time, those in high status were expected to lead virtuous lives, and to set examples for those that followed them. Confucianists believed that the moral code of man was set down by heaven, and if those in positions of authority did not set good examples, then they would deposed by the forces of heaven. One of the first great Chinese poets to write of Confucianism was T’ao Ch’ien. T’ao Ch’ien’s poem Substance, Shadow, and Spirit shows a comparison between Confucianism, Buddhism, Ta .....

.... the closing and the illegalizing of abortion clinics, and the prosecution of people who perform these deeds. As with any big descion we must consider the opposing views. One reason that the debate on what we should do about doesn’t go anywhere, is because each side focuses on a different topic. We make no progress because we are not talking about the same thing. The anti-abortionists are focused on the fetus’ rights, and the pro-abortionists are focused on the women’s rights. Though these issues are basically interrelated, they are different topics. The issues of the social problems like child neglect and financial b .....

.... the mineral arsenopyrite is heated and decomposes with the liberation of gas. The gas can be condensed on a cold surface. Metallic was first produced in the 17th century by heating with potash and soap. General Properties is very similar to antimony and bismuth. It exists in bright, metallic forms that are stable in air. It is found free in nature or in combination with other elements, usually sulfur. It is most often used to improve the strength and hardness of alloys, which are combinations of metals. is a gray, shiny metalloid, which is a moderately good conductor of heat and electricity, but gray is brittle and bre .....