.... soon as possible. One can get red eyes, itchiness, and or stomach problems. During World War 2, the government built many factories to absorb nitrogen gas from the air and to use them in explosives. Soon after the war, these factories were used to absorb nitrogen gas and to be used as a fertilizer. This method was inexpensive and farmers were now actually making a profit. By 1985, farmers used approximately eleven million tons of nitrogen a year. This is eight times more than what farmers used in 1950. The most widely used fertilizer is pure ammonia. It is kept in liq .....

.... evolve or change in time. There was no beginning in the past, nor will there be change in the future. This model assumes the perfect cosmological principle. This principle says that the universe is the same everywhere on the large scale, at all times.2 It maintains the same average density of matter forever. There are observational evidences found that can prove the model is more reasonable than the Steady State model. First, the redshifts of distant galaxies. Redshift is a Doppler effect which states that if a galaxy is moving away, the spectral line of that galaxy observed .....

.... women described themselves as relatively nontraditional. Those led to think he favored traditional gender roles described themselves as more traditionally feminine” (Handout - Diversity and Community). I believe that one's immediate family, rather than society, has a greater influence on gender roles. For example, girls who group up without a mother or older sisters tend to be less feminine because all they have are male role models. Another example of how the family influences gender roles is whether or not the mother works. A housewife who believes that the home is whe .....

.... hydrogen atoms into protons (H+) and electrons (e-). When the protons and electrons recombine, the electrons enter a higher energy level (n=3). Then, when the electron drops from the n=3 level to the n=2 level, an Hphoton is emitted. 2 This photon has a wavelength of 6563 Å, and therefore corresponds to the red portion of the visible spectrum. It is these H photons which give the nebula the distinctive red color which we see. The extreme brightness of the O-type and B-type stars, coupled with the Earth’s atmosphere, has always made high-resol .....

.... Some of these enzymes can cut and join strands of DNA. Using such enzymes, scientists learned to cut specific genes from DNA and to build customized DNA using these genes. They also learned about vectors, strands of DNA like viruses, which can infect a cell and insert themselves into its DNA. Scientists started to build vectors, which incorporated genes of their choosing and used vectors to insert these genes into the DNA of living organisms. Genetic engineers believe that they can improve the foods we eat by doing this. At first glance, this might look exciting to .....

.... The center of the system was not yet well defined, but forecasters believed Floyd could reach major hurricane strength with maximum sustained winds of 112 mph or more after 72 hours. Tropical Storm Floyd Continues to Intensify Washington, September 9, 1999 -- The National Hurricane Center (NHC) reported that Tropical Storm Floyd was located about 450 miles east of the Leeward Islands. The strong tropical storm and had maximum sustained winds of 60 mph. NHC Forecasters expected the system to reach minimal hurricane strength within the next 24 hou .....

.... only a fraction of the size. How the PEM Fuel Cell Works: A fuel cell is an electrochemical device that produces electricity silently, without combustion. Hydrogen fuel, which is one of the most abundant chemicals in the universe, and oxygen from the air are electrochemically combined in the fuel cell to produce electricity. Heat and pure water vapour are the only by-products of the fuel cell. The Ballard Fuel Cell is made up of two electrodes, the anode and the cathode, separated by a polymer membrane electrolyte. Both the anode and the cathode are coated in a thin laye .....

.... coupled with the ability to construct an electronic catalog. This catalog must support multiple layouts and instant credit card transaction processing. 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 includin .....