NDU Term Paper | Speech Communication - Global Warming


Published on

NDU Term Paper | Speech Communication - Global Warming by Naja Faysal

Published in: Education, News & Politics
  • Be the first to comment

  • Be the first to like this

No Downloads
Total views
On SlideShare
From Embeds
Number of Embeds
Embeds 0
No embeds

No notes for slide

NDU Term Paper | Speech Communication - Global Warming

  1. 1. Speech presentation: Global Warming By: Naja Faysal Please note that my information is referenced to trusted sources based on scientific reasoning and experiments. Ladies and Gentlemen: There is no question that the Earth is getting hotter—and fast. The real questions are: How much of the warming is our fault, and are we willing to slow the meltdown of ice and protect our global system from extra damages? Global warming can seem too remote to worry about, but the fact is that our planet will face severe environmental changes in the next century. In a normal winter day, you may say that a few degrees of warming is not something to worry about, and warning from this, can seem to most of you as an environmentalist who wants to disturb you and cramp your lifestyles. The fact is that the world is heating up right now, and fast. Globally, the temperature is up 1°F (.5°C) over the past century, but some of the coldest, most remote spots have warmed much more. The results aren't pretty. Ice is melting, rivers are running dry, and shores are eroding, threatening communities. Flora (plants, agriculture) and fauna (animals) are feeling the heat too, these are not projections; they are facts on the ground. “The changes are happening largely out of sight. But they shouldn't be out of mind”
  2. 2. Some people argue that it might be just a passing situation where they say that for example centuries ago Europe was warm while now it is cold and unpleasant, and probably this time is again an environmental change that will return it back to its warm. Experts counter argue this and say that this time there are something else driving the planet to an abnormal situation. People for centuries have been clearing forests and burning coal, oil, and gas, pouring carbon dioxide and other heat-trapping gases into the atmosphere faster than plants and oceans can soak them up. The atmosphere's level of carbon dioxide now is higher than it has been for hundreds of thousands of years. The United Nations climate report declared that human activity droves most of the past century's warming. Global temperatures are shooting up faster than at any other time in the past thousand years. And climate models show that natural forces, such as volcanic eruptions and the slow flickers of the sun can't explain all that warming. Thus there is now stronger evidence that most of the warming over the last 50 years is attributable to human activities (Procedure) Human activities have altered the chemical composition of the atmosphere through the buildup of greenhouse gases – primarily carbon dioxide, methane, and nitrous oxide. Some not naturally occurring greenhouse gases are generated as a result of a variety of industrial processes; these gases are the most heat absorbent. When the level of greenhouse gases increases the heat will be absorbed more and more thus, warming the temperature of the earth. In more details is that usually, energy from the sun drives the earth’s weather and climate, and heats the earth’s surface; in turn, the earth radiates energy back into space. Atmospheric greenhouse gases
  3. 3. (water vapor, carbon dioxide, and other gases) trap some of the outgoing energy, retaining heat somewhat like the glass panels of a greenhouse. Without this natural “greenhouse effect,” temperatures would be much lower than they are now, and life as known today would not be possible. Instead, thanks to greenhouse gases, the earth’s average temperature is a more hospitable 60°F. However, problems may arise when the atmospheric concentration of greenhouse gases increases. Research shows that since the beginning of the industrial revolution, atmospheric concentrations of greenhouse gases have increased rapidly in the atmosphere, thus, making the earth warmer. The combustion of fossil fuels, plant respiration, decomposition of organic matter and other human activities are the primary reason for the increased concentration of carbon dioxide. What has changed in the last few hundred years is the additional release of carbon dioxide by human activities. Fossil fuels burned to run cars and trucks, heat homes and businesses, and power factories are responsible for about 98% of U.S. carbon dioxide emissions. Increased agriculture, deforestation, landfills, industrial production, and mining also contribute a significant share of emissions. In 1997, the United States emitted about one-fifth of total global greenhouse gases. Today, action is occurring at every level to reduce, to avoid, and to better understand the risks associated with climate change. At the global level, countries around the world have expressed a firm commitment to strengthening international responses to the risks of climate change. But again, it always starts by you… As you wish for your children the best in their lives you should be caring about their health. If you reduce your consumption of industrial products that harm the environment, you will
  4. 4. for sure protect the atmosphere from greenhouse gases. Thus, you will care about the health of your descendants. Thank you.