.... will add further to the climate change problem. Experts hope that this new way to cut back on these CO2 emissions will not be costly and time consuming. Dry air is made up of about 78 percent nitrogen and 21 percent oxygen. For living things, the two most important gases are oxygen and carbon dioxide. All plants and animals in respiration use oxygen. Respiration is the process by which food is changed to energy. Photosynthesis is the process by which plants make sugar and starches. Thus nature restores oxygen and carbon dioxide to the air about as fast as they are used up. There shoul .....

.... of mars is so thin, wind velocities up to several hundred Km per hour are required to raise the dust particles during a dust storm, and these fast- moving particles erode structures with a sand-blasting effect " (Grolier, 1992). Therefore, the surface is basically plain-like and covered with large craters. There are also some areas where the rock is " jumbled." The poles of Mars are iced over and the temperature is about 160 - 170 degrees K. Mars also has its share of volcanoes. Most of these volcanoes are shield volcanoes. The surface is littered with winding channels that resemble river ch .....

.... luckily chemicals can neutralize the oil before massive damage occurs. In 1983 the Dow Chemical Company’s factory, a major producer of chemicals, showed contamination from dioxin. Dow undertook a 3 million dollar study of the material. The company announced that Dioxin is less health and life threatening. High-temperatures are used to reduce the toxicity of waste. These processes use plasma technology to make the waste more environmentally friendly. Plasma treatment reach temperatures up to 1,650o F. In the United States incineration is a primary way to get rid of liquid waste. Thi .....

.... 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 liquid form under pressure in steel tanks. Three solid nitrogen ar .....

.... a few of the human disruptions to nature available to our knowledge. We are conscious of many more, and there are probably others that we are not aware of. If we do not start taking them seriously soon it will be too late, if it is not already. We need to reevaluate our priorities and plan for the future existence of this world. A group labeled the Earth-Firsters' often attempt to accomplish this task through drastic and sometimes dangerous methods. As Joni Seager states ( The Eco-Fringe: Deep Ecology, Pg. 636), "In Australia, Earth-First protesters buried themselves up to their necks .....

.... has existed a rich source of variability in crop plants but the encroachment of civilization has reduced the natural variability inherent in primitive plant forms and related species of crop plants. Agricultural process, as a result of new breeding programs, has reduced rather than increased crop variability as improved cultivars, or varieties, are planted in wider and wider areas and old cultivars, which may contain valuable genes, are lost. Crop failures, which result in a smaller gene pool, have led to an increased awareness of the need to preserve genetic diversity in plants. Effor .....

.... material lying within the cell between the cell membrane and the nucleus. The Cytoplasm also contains organelles, which have specific functions in the cell metabolism. Then there are the Golgi Bodies, which serve as processing, packaging, and storage for the cell. These organelles package and ship things out. Another parts of the cell, a very important one in fact, are the Lysosomes. These organelles are used to break things down and contain enzymes. First we placed the slide under the simple microscope and observed it at ten times magnification level. We each took turns looking. We then .....

.... According to this creation the universe was established in six days. Biblical creationists interpret most sedimentary rocks as products of Noah's flood. The majority believes that the earth is under 10,000 years of age. Some believe 4004 BC was the year of creation. The person who proposed the methods by which natural processes cause the evolution of the species was Charles Darwin. He used natural selection to explain how evolution worked. Darwin's old teacher said evolution would "brutalize" us as human beings and sink us "into a lower grade of degradation" than any time in recorded h .....

.... 249g were hung according to their specified directions. The center ring was anchored to the nail positioned at the platform’s center while the upper ring of the spring scale was attached to the free end of the third ring. After attaching the spring balance, its hook was pulled and the reading on the scale and the direction of the pull at which the two forces (hanging mass) are “balanced.” “Balance” was determined. II. Results and Discussion Table 1. Time, distance, velocity and acceleration measurements for a marble. Distance (cm) Time (s) Mean Time (s) Average Velocity .....

.... that the species on the islands varied slightly from each island and were adapted to local conditions. The reaction to this theory was immediate. Biologists argued that Darwin could not prove his hypothesis. Other criticised his ideas of variation and how he could not prove how these variations came about or how they were passed on. This part of his theory was not answered until the birth of modern genetics in the early 20th century. In fact many scientists had doubts about this theory for 50-80 years. The most publicised attacks came from religious opponents who believed it was impossible f .....