The ozone layer diminishes more each year. As the area of polar ozone depletion (commonly called the ozone hole) gets larger‚ additional ultraviolet rays are allowed to pass through. These rays cause cancer‚ cataracts‚ and lowered immunity to diseases.1 What causes the depletion of the ozone layer? In 1970‚ Crutzen first showed that nitrogen oxides produced by decaying nitrous oxide from soil-borne microbes react catalytically with ozone hastening its depletion. His findings started
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It is tri atomic oxygen (03) and is a gas found in the troposphere as well as in the stratosphere. Tropospheric ozone is undesirable since it is a pollutant these‚ causing photochemical smog and greenhouse effect. In the stratosphere‚ it acts as a protectant since‚ (i) It absorbs the dangerous UV-radiations (ii) It helps to trap the weather pattern within the troposphere‚ by generating a temperative inversion in the stratosphere. Tropospheric ozone is increasing due to human activities‚ while
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Humans all need something to laugh about in order to make life worth living. One area of humor is in the overstatement of advertisement of products sold on the market. It is the challenge of marketing experts to produce a creative image for a product. Sometimes the focus of the image of the product has more priority than the performance of the product. An article in‚ “The Onion‚” the author satirizes how products are marketed to consumers through means of a variety of literary strategies such
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ROLE OF YOUTH IN OZONE LAYER PROTECTION Ozone layer plays a vital role in protecting animals‚ human beings and plants from ultraviolet radiation. Ozone layer is destroyed by a group of manufactured or human made chemicals such as chlorine bromine. These chemicals are called "ozone-depleting substances". Ozone layer is destroyed by some natural’s ways and some humane made activities. A single molecule of chlorine can break apart thousands of molecules of ozone. Chlorofluorocarbons the most widely
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Date:7.6.2013 Objectives: Part 1: (i)To learn the technique of TLC and the visualization of colourless components. (ii)Identify the unknown drug by a TCL comparison with standard components. Part2 :to learn the separation technique by using TLC plate in separating a mixture of compound by using spinach leaf. Apparatus:UV lamp‚capillary ‚250 ML beaker Materials:aspirin‚acetaminophen‚caffeine‚unknown A‚unknown B‚TLC plates‚ethyl acetate‚Hexane‚acetic acid‚iodine Introduction: Procedure:
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Earth-like Planets‚ Life or Lifeless? For centuries man has looked at the sky‚ and wondered‚ is someone looking back? Science is now closer than ever to answering this quest that is nearly as old as mankind itself. In the last century new technologies and scientific break-throughs have showed us that planets do exist in other solar systems and that there is a probability for other earth-like planets. We have also recognized the parameters and building blocks for life as we know them on earth
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“Life was like a box of chocolates. You never know what you’re gonna get.” Do you know why? Life was like a box of chocolates. You never know what you’re gonna get. Most of you will literary answer: “You can get anything that you want‚ like chocolate flavor‚ milk flavor‚ dark chocolate. Sometimes it has nuts on it. But this is not the real meaning of this. Each of us is like a chocolate in a box. If you purchase a box of chocolate with no label on it‚ you will not know what is inside. Like
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Discussion Using the Thin Layer Chromatography experiment‚ caffeine was found to be the most polar due to the fact that it stayed closer to the stationary phase. Caffeine contains four amine groups that are extremely polar as a result of the hydrogen bond and amide functional group. Acetaminophen was found to be the second most polar analgesic drug tested. Acetaminophen contains a polar alcohol group on one side and amide group on the other but also includes non-polar functional groups that consisted
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Processing What was life really like in the colonies? Everyone either had a farm or in a city‚ no one lived in the suburbs. Many people made money on their farms or plantations where many slaves worked for the landowner. Also‚ many children didn’t receive education unless you were quite wealthy. So‚ let’s see what was life really like in the colonies. Let’s start off where people live‚ many people were farmers and that’s how they made a living. They grew their own food and even made things out
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A Glance at the Session Layer of the OSI Model Throughout the history of networking‚ one model has stood the test of time for providing not only insight‚ but also a foundation by which all networking systems utilize in some form or fashion. The seven layers of the OSI model‚ which stands for Open System Interconnect‚ are: Application‚ Presentation‚ Session‚ Transport‚ Network‚ Data link‚ and Physical. These layers are the framework for networking‚ because they represent the roadmap‚ rules‚ and
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