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Essays on Science

Global Warming -.
Download This PaperWords: 707 - Pages: 3

... caused by global warming would greatly outweigh the damage caused to the economy by severely restricting energy use. Finally, his position assumes that the agreement will significantly reduce greenhouse 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 s ...



The Beginning Of Time
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... the universe. The first theory is the infamous Big Bang Theory, which will be detailed later. The second is the Steady State Theory. (Weinberg, 1977) The later hypothesis was created to replace the common belief that the universe was completely static. The expansion of the universe was discovered in 1929 when Edwin Hubble discovered that every galaxy in the universe was moving away from each other, this meant that the universe was expanding. Hubble found the movement of the galaxies by using a phenomenon known as the Doppler effect. This effect caused bodies moving away from an observer to have a "red-shifted" spectrum (the light spectrum of the body had been s ...



Photochemical Smog
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... weather created a toxic atmosphere that claimed about 4000 human lives. Today, the use of other fossil fuels, nuclear power, and hydroelectricity instead of coal has greatly reduced the occurrence of industrial smog. However, the burning of fossil fuels like gasoline can create another atmospheric pollution problem known as photochemical smog. Photochemical smog is a condition that develops when primary pollutants (oxides of nitrogen and volatile organic compounds created from fossil fuel combustion) interact under the influence of sunlight to produce a mixture of hundreds of different and hazardous chemicals known as secondary pollutants. Development of photoche ...



A Discussion On Earthquakes
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... of earthquakes, people around the world created folklore to explain them. Until recent times, science has not had a complete understanding of how earthquakes are caused, and what can be done to predict when they will strike. This essay will discuss how earthquakes are formed and occur, how scientists can more accurately predict the arrival of earthquakes. Before contemplating how earthquakes might possibly be prevented, it is essential that the process and formation of and earthquake be understood. Earthquakes are caused when the earth's crustal plates move, rub, or push against each other. The earth's crust (the outer layer of the earth) is made up of seven maj ...



Basking Shark
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... of C. maximus populations World-Wide. Although all Basking sharks are large, the females tend to be quite a bit bigger than the males, which is probably because they have to carry a whole other organism within (Harman, 1996, 21). Basking sharks have, at some point in time, also been known as the elephant shark, the Bone shark, sailfish shark, and sunfish. The reason this shark is occasionally referred to as the Bone shark, is because when they die, they sink (their density is greater then the water's density) and are ravaged among the sea floor, by rocks, etc. (Steel, 1985, 132). However, when they do finally wash up on ...



Bacterial Conjugation Experiment
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... integrated into the genome. When conjugation occurs, the F genes start travelling across the pilus, bringing the remainder of the genome behind it. Most often, the entire genome isn't transferred. The bacterial genome that is delivered can be measured in minutes from the origin of transfer. That is, the amount of time it takes for a particular gene to be transferred from one bacterium to another indicated how far it is from the origin of replication. METHODS AND MATERIALS: Media Preparation: The starting material was Medium 56-glucose agar (MM560). The components of the MM56 are found in figure 1. From this, we made two types of media, complete and selective. The ...



Coconino Sandstone
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... for McKee and Reiche, have studied the Coconino. The early work of these two, however, correctly identified the eolian origin of the Coconino. These Sahara-like dunes were part of an enormous desert that once extended north into Montana. During the last ten years, a number of studies on modern and ancient sand seas, or ergs, have increased greatly our understanding of eolian bedform dynamics. Additionally, we can describe trace fossils in the Coconino and relate them to the physical environments of deposition. This provides us with more comprehensive reconstruction of the erg environments. Although the cliff-forming nature of the formation can present certain lo ...



El Nino
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... be made easier. Normally, a "pool" of warm water in the western Pacific waters exists. Under El Nino conditions, this "pool" drifts southeast towards the coast of South America. This is because, in a normal year, there is upwelling on the western South American coastline, and cold waters of the Pacific rise and push westward. However, during an El Nino year, upwelling is suppressed and as a result, the thermocline is lower than normal. Finally, thermocline rises in the west, making upwelling easier and water colder. Air pressures at sea level in the South Pacific seesaw back and forth between two distinct patterns. In the high index phase, also called "Southern Os ...



Acid Rain
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... eventually condenses in the air and comes back down to the earth in any from of precipitation (snow, rain, hail). Upon returning to the earth, the acidic precipitation can have serious repercussions on both the environment and as well as human structures. On average, acid rain is about nine times more acidic than rain water, and has been recorded as low as 2.5 on the pH scale (forty times more acidic than water.) Acid deposition kill fish, soil bacteria, and as well as aquatic and terrestrial plants. the acid also drain the soil of essential nutrients such as aluminum and releases them into bodies of water such as streams, lakes, and ponds. These bodies of wa ...



Radio Waves
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... waves electronically), which is number of times they pass through a complete cycle per second; or by their wavelength, which is determined by the distance (by meters) that is traveled from the crest of one wave to the crest of the next. Radio frequencies are measured in units called kilohertz, megahertz, and gigahertz. (1 kilohertz = 1000 hertz : 1 megahertz = 106 hertz, 1 gigahertz = 109 hertz). All radio waves fall within a frequency range of 3 kilohertz, or 3000 cycles per second to 30 gigahertz. Within the range of frequencies, radio waves are further divided into two groups or bands such as very low frequency ( VLF 10-30 kHz ), low frequency (LF 30-300 KH ...




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