air conditioner‚ we use Freon gas and when this Freon gas goes up to the Stratosphere where the Ozone layer is. And that Freon gas destroys the Ozone layer‚ so by that‚ we get more harmful ultraviolet rays from the sun that can cause our skin old or even cause skin cancer. So‚ I suggest that we should take buses when we go to somewhere not that far away because it actually helps our Ozone layer. Secondly‚ we have soil pollution. I think when farmer uses agricultural chemicals to their crops‚ it
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Science Folio Chapter 5 B6D5E1 Title: Importance of maintaining the cleanliness of air Introduction The atmosphere of Earth is a layer of gases surrounding the planet Earth that is retained by Earth’s gravity. The atmosphere protects life on earth by absorbing ultraviolet solar radiation‚ warming the surface through heat retention (greenhouse effect)‚ and reducing temperature extremes between day and night. One of the most important factors drawing international attention which is
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IROATU‚ GODSON C.S. ENVIRONMENTAL REPORTING ASSIGNMENT QUESTION: List 10 different environmental problems we have vis-à-vis the Causes‚ Impact and Solution LIST OF ENVIRONMENTAL PROBLEMS 1 CLIMATE CHANGE Climate change is a significant and lasting change in the statistical distribution of weather patterns over periods ranging from decades to millions of years. It may be a change in average weather conditions‚ or in the distribution of weather around the average conditions (i.e.‚ more
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Bianca Amisola 3Bio5 CHAPTER 5 – EARLY CRANIATE MORPHOLOGY CRANIATE EGGS Egg Types: 1. MICROLECITHAL – little yolk Amphioxus and placental Mammals 2. MESOLECITHAL – moderate amount of yolk freshwater Lamprays‚ basal Actinopterygian and Neopterygian fishes‚ Lungfishes and Amphibians 3. MACROLECITHAL– massice amounts of yolk marine lampray. Elasmobranchs ‚Teleosts‚ Reptiles and Monotremes Egg Distribution: 1. ISOLECITHAL – yolk with even distribution of yolk (Microlecithal eggs) 2. TELEOLECITHAL
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OSI Protocol Hierarchy Session Layer The session layer is the fifth among the seven layers of the Open System Interconnections (OSI) model. It resides above the transport layer and below the presentation layer‚ and provides “value added" services to the underlying transport layer services. The session layer (along with the presentation layer) add services to the transport layer that are likely to be of use to applications‚ so that each application doesn ’t have to provide its own implementation
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Developmental biology Embryonic Induction & its role in The Development of the Vertebrate Eye The migration of cells is important during many stages of development‚ from the early events of gastrulation to the formation of the nervous system during morphogenesis. Among other processes‚ cell movement involves cell o cell interactions and cell to substrate interactions. These phenomena are largely dependent on the changing patterns of cell adhesion. As the migrating cell travels it continuously
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relationship between the hole in the ozone layer and global warming we must first understand what they are. The hole in the ozone layer is mainly over Antarctica but can sometimes be seen over the North Pole. The ozone depletion is caused by CFCs that were released by aerosol cans and refrigerates before they were banned in 1996. Yet these chemicals don’t disappear right away they can stay in our atmosphere for over fifty years causing the molecules of the ozone layer to breakdown creating a hole. Global
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The ozone layer protects the Earth from the ultraviolet rays sent down by the sun. If the ozone layer is depleted by human action‚ the effects on the planet could be catastrophic. Ozone is present in the stratosphere. The stratosphere reaches 30 miles above the Earth‚ and at the very top it contains ozone. The suns rays are absorbed by the ozone in the stratosphere and thus do not reach the Earth. | | | | | | The Ozone Layer Over Time. Image Credit: Institute for Studies in Development
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Why is our Ozone Layer is Being Destroyed? Ozone breaks down in the ozone layer in the following major ways: * N2O* encounters water vapor‚ and can no longer help form ozone. * Ozone absorbs UV-C or UV-B and most of it will break back down to oxygen. * Ozone has a natural half-life‚ and decays spontaneously with time and temperature back to oxygen. * Ozone encounters water vapor‚ and forms hydrogen peroxide. * Ozone encounters a photocatalyst (like CFC‚ HCFC‚ Halon)‚ and is
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1. Processing - Variable 2. Queuing - Variable 3. Transmission - Variable 4. Propagation - Constant = propagates at the propagation speed of the link. R23 What are the five layers in the Internet protocol stack? What are the principal responsibilities of each of these layers? 1. Application: contains the network applications and application
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