Warming happens naturally however because of the human race we have increased how fast it’s happening. There have been many meetings with other nations to control the amount of carbon-dioxide released. Along with the release of CFC’s that hurt our ozone. The Ozone deflects 99% of the UV rays which cause a variety of disease. We all know that it is bad but because most people don’t know what to do to help their environment. Well it’s the simple things like recycling and reducing your carbon-foot print.
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Link Layer Our goals: ❒ understand principles behind data link layer services: ❍ ❍ ❍ ❍ ❒ error detection‚ correction sharing a broadcast channel: multiple access link layer addressing reliable data transfer‚ flow control: done! instantiation and implementation of various link layer technologies 5: DataLink Layer 5-1 Link Layer ❒ ❒ ❒ ❒ ❒ 5.1 Introduction and services 5.2 Error detection and correction 5.3Multiple access protocols 5.4 Link-Layer Addressing
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Reginald Monroe-@02516632 Summary of OSI layers & Security OSI stands for Open Systems Interconnection and it was developed by the Europeans in the 1980’s. OSI is divided into two major fields‚ an abstract model of networking and a set of defined protocols. The seven layers of the OSI basic reference model are listed and defined below (from bottom to top): 1. The Physical Layer – this layer describes the physical components of the various communications media‚ it also includes the electrical
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ultraviolet radiation that strikes the sun is form the sun. The action of ultraviolet rays on oxygen in our atmosphere creates layer about 9 to 19miles above sea level. This ozone layer absorbs almost all of the shorter waves of UV rays that enter the earths atmosphere‚ and prevents it from doing any severe damage on the living organisms on earth. The fast depleting ozone player is a rising concern. UV radiation is known to be one of the leading causes of Skin cancer. UV rays from the sun and
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The Montreal Protocol on Substances that Deplete the Ozone Layer was adopted in 1987 as an international treaty to eliminate the production and consumption of ozone-depleting chemicals. A subsequent amendment created the Multilateral Fund for the Implementation of the Montreal Protocol‚ becoming the first of the multilateral environmental agreements to establish a financial mechanism for implementation. The World Bank has developed a strong partnership with the Multilateral Fund (MLF) since its
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Nowadays‚ as much as our environment is concerned‚ much efforts were already made to de-escalate its destruction. Good in the news update that the ozone layer is now thickening and has stopped from further depletion with respect to the endeavours and cooperation to the multinational agreement Venna Convention on the Protection of the Ozone Layer. What’s ironic is that while efforts to protect the environment are raised to the international level‚ personal level environmental values and behaviors
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Five-Layer Density Column A density column consists of layers of liquids of different densities which do not mix with each other‚ and which are clearly distinguishable from each other. The highest density material is at the bottom of the column‚ and as you proceed up the column‚ the density of each successive layer decreases‚ with the lowest density layer on top. Three methods for construction of a five-layer density column are discussed in this write-up. All methods use the same five liquids. •
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show you more about ozone depletion and how it relates to indoor air pollution. According to our text ozone "is a naturally produced‚ essential component in the stratosphere‚ which encircles our planet some 10 to 45 km (6 to 28 mi) above the surface." (Berg‚ Hager‚ & Hassenzahl. 2011). Ozone in the stratosphere is a good thing‚ when in this layer it absorbs much of the suns ultraviolet rays and protects us from harm. In the troposphere however‚ it is a different story. Ozone there is a combination
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Environmental Science Essay Air Pollution Pollution and How It Affects Elements within an Environment Harry Bond III Everest University The Earth is entirely surrounded by a blanket of air which is called the earth’s atmosphere. The atmosphere allows human‚ plants‚ and all the earth’s creatures big and small to exist. The atmosphere protects the earth and without it the heat from the sun would burn all that is exposed to its rays
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MONTREAL PROTOCOL: The Montreal Protocol on Substances That Deplete the Ozone Layer (a protocol to the Vienna Convention for the Protection of the Ozone Layer) is an international treaty designed to protect theozone layer by phasing out the production of numerous substances believed to be responsible forozone depletion. The treaty was opened for signature on September 16‚ 1987‚ and entered into force on January 1‚ 1989‚ followed by a first meeting in Helsinki‚ May 1989. Since then‚ it has undergone
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