.... These chemical reactions that change air pollution into acid rain can take from several hours to several days. Sunlight increases the rate of these reactions. Rainwater, snow, fog, and other forms of precipitation containing these mild solutions of sulfuric and nitric acids fall to the ground as acid rain. Years ago, when smokestacks were only a few stories tall, pollution from the smokestacks usually stayed near the ground and settled on the land nearby. This only caused unhealthy conditions for plants and animals near the smokestacks. To reduce this pollution, the government passed l .....

.... at which time the eggs hatch. 1. Daphnia magna. Take a small culture dish to the instructor to receive a few living D. magna. This is a very large species, as go, and one that is easily cultured in the laboratory. Return to your bench and observe the animals using the dissecting microscope. Note the characteristic jerky swimming motion. The uneven appearance of this motion is a result of there being only one pair of locomotory appendages, or oars. Try to observe the movement of the second antennae, which are the locomotory appendages. If you have watched adult brine shrimp, Artemia, in m .....

.... coughs, sore throat and even cancer can also develop if children are expose to secondhand smoke. With all these harmful to children, there are ways to protect them from it. First, as a parent, don’t smoke. If you are a smoker, quit! If you can’t, don’t smoke in your house, in the car or near your children. Have a permanent place outside the house just for smoking purposes only. Make sure that your child's day-care, school or playgrounds are smoke free. Educate everybody you know about the hazard of secondhand smoke to children’s heath. Secondhand smoke is very dangerous to chi .....

.... one part of a solution. The particles in a solution will not separate no matter how long the solution is allowed to stand under constant conditions. In a solution, one substance is usually considered to be dissolved, or broken down in another. The substance that is dissolved is called the solute. The substance that does the dissolving is the solvent. Not every substance dissolves in every other substances. A substance that dissolves in another substance is called soluble. Soluble means capable of being dissolved. A substance that does not dissolve is called insoluble. Types Of Solut .....

.... order to develop this prosthesis they had to go through two main phases, the analysis of a jogger wearing a standard walking prosthesis and computer simulation of the flexing of the knee on this walking prosthesis. They had to measure rotation, weight bearing, moments, and the stress of the joints acting on this limb. After the mechanical actions were mapped out they had to use many mathematical equations to spring force and spring stiffness. All of this was accomplished and the conclusion was that by varying the placement and orientation of the spring, the moment arm values could be .....

.... 1970s, an American revision of scientific terms changed it simply to "Down syndrome," while it still is called "Down's" in Europe. In the first part of the twentieth century, there was much speculation of the cause of Down syndrome. The first people to speculate that it might be due to chromosomal abnormalities were Waardenberg and Bleyer in the 1930s. But it wasn't until 1959 that Jerome Lejeune and Patricia Jacobs, working independently, first determined the cause to be trisomy of the 21st chromosome. Cases of Down syndrome due to translocation and mosaicism were described ove .....

.... he published his first book which was a translation of letters written by the 7th century writer, Theophylactus of Simocatta. After that he wrote an astronomical discourse that laid the foundation of his heliocentric theory; the theory that the sun is the center of our solar system. However, it was 400 years before it was published. After leaving his uncle, he wrote a treatise on money, and began the work for which he is most famous, On the Revolution of the Celestial Spheres, which took him almost 15 years to write. It is ironic that what he devoted a good part of his life would not be p .....

.... eggs. The hydropower plant's turbines are also very dangerous to young salmon. Many of them are killed by the giant turbines on their way back to the ocean. Killing off many of the salmons new generation. Pollution is also a killer of many Chinook salmon. Pollution caused by sewage, farming, grazing, logging and mining find it's way into our waters. These harmful substances kill many species of fish and other marine life. The Chinook salmon is no exception. The chemicals are dumped into the rivers and streams and eventually these chemicals find their way to the ocean, polluting and eff .....

.... in Pasadena, CA. "What we see may be the first stages of galaxy formation. But the objects are so faint that their true nature can only be explored with the advanced telescopes of the future." "This observation is a major step toward fulfilling one of Hubble's key objectives: to search for the faintest and farthest objects in the universe," adds Ed Weiler, NASA's acting Associate Administrator for Space Science. In a separate discovery, Thompson also found that faint red galaxies matched up with compact blue knots of light seen in the earlier visible light image. "This means that some objec .....

.... using this technology. At the end of this report you will also be able to describe the major differences between a CISC instruction set and a RISC instruction set and list some key advantages and disadvantages of RISC as compared to CISC 2. Introduction Speeding up a computer system involves many different strategies. By speeding up the input and output devices in different peripherals. But the most fruitful place to speed up the system is by designing a faster processor. This report will explain "CISC" and "RISC" technologies and show how computer designers have tried to do sp .....