Global Warming: True or False? Global warming, most of us have a general idea of what it is but I’m going explain it in a little more detail. In a nutshell, it’s the steady rising of Earth’s temperature. What’s causing this is greenhouse gases plus the greenhouse effect. The greenhouse effect is what happens when certain gases like carbon dioxide, methane, nitrous oxide and water vapour trap heat. These gases let in light but keep heat from escaping, causing the Earth to warm. The amount of greenhouse gases in the atmosphere is a lot more than it was in the past. Levels of greenhouse gasses have gone up and down over the course of history but it has never been higher than it is this century.
The term “global warming” is not actually that accurate. Scientists use the term “climate change” more often than not because the Earth’s wind and ocean currents move heat around the globe in ways that can affect places differently. One town might be in a heat wave while another could be cold. One city could have excessive rainfall while someplace else could be having a dry season. The effects can vary from place to place but the cause is the same. There are many things that global warming could do to our planet. The most apparent one is the melting of Earth’s ice. That part has already begun. Ice is melting worldwide, especially at the North and South Poles. Glaciers, ice sheets, Arctic sea ice and all the other blocks of ice in between are melting and will continue to melt if the temperature doesn’t start to drop back to normal. You’re probably thinking, “Who cares about the glaciers? It’s just ice.” Well, if all the ice melts that means the sea levels will rise. It will flood all the coastal cities. New York, Miami, Venice, New Orleans, Shanghai, they’ll all be underwater and those are just the ones that are the most vulnerable. Even the most powerful cities could be flooded if they’re near the ocean. On top of that, there will be less freshwater available. We’re lucky to be living in Canada. Our country has one of the largest groups of freshwater lakes in the world. But others aren’t so fortunate. Only 2% of the Earth’s water supply is usable freshwater. 75% of that 2% is in glaciers. A lot of people depend on glaciers for drinkable water.
Some other effects include intense storms and changes in ecosystems. There’ll be more rain followed by longer and drier droughts. Entire ecosystems will change and species could even become extinct. If the weather gets hotter, the animals will want to move farther north where they could live more successfully. But some species won’t be able to move and they’ll die out because they’re not used to the extreme heat. But despite all the evidence for global warming there are many individuals who are skeptical about climate change and don’t believe that the Earth is warming at all. Some argue that the climate changes at all the time. It’s happened before so it’ll happen again, right? Well, usually change in climate is a natural thing that happens. Global temperatures and levels of greenhouse gases have changed time and time again in the past due to changes in the sun, volcanoes and other natural influences. But today, the amount of carbon dioxide is more than a third since the Industrial Revolution. Historically, Earth’s temperatures swing back and forth between the weather we have today and weather so cold that sheets of ice covered a lot of North America and Europe. But those things happened over the course of centuries and even millenniums but now things are happening over decades. That’s a big difference and Earth just can’t keep up with the quick shift in temperature.
Another reason some people are skeptical is because not all scientist agree on the issue. In April, 1998 a man named Art Robinson of the Oregon Institute of Science and Medicine created the Petition Project, also known as the Oregon Petition. The petition states that the suggested limits of greenhouse gases would harm
Global Warming Paper Cameron Conolly For years many people have believed that we are causing the Earth to warm up faster. Global Warming is the heating of the climate. Others believe it is due to natural climate processes. Either way, we know that Global Warming is a serious issue for our Earth. One of the reasons we think Global Warming is occurring is because of Orbital Variations. “Orbital Variations” is part of a theory developed by Milutin Milkankovic. An astonishing fact about Milankovic…
Global Warming Jenny Mallory Argosy University Rise of Modern Science Following years of debate publicly on whether global warming is due to natural activities or is the result of mankind, evidence suggests that extreme climate and weather changes are caused by humans. Over the years, the earths’ climate has wavered many times, from periods of record breaking heat to the ice ages. Changes in the sun’s force and the earths’ course around it, along with natural elements such as; erupting volcanos…
SPC 1016 November 06, 2008 Specific purpose: To convince my audience that global warming does exist and we can help put a stop to it. Introduction I. What would you do if someone tells you that the foundation of your home is sinking? Would you try and fix it or would you let it sink slowly? II. Today, I am going to help you recognize that global warming does exist, we are the main cause and we can do something to stop this. III. It is important we all know this because before we know…
GLOBAL WARMING: NATURAL OR MAN-MADE There is no question that there is an increase in Earth’s temperature and we are experiencing what is referred to as global warming. The Earth has experienced this many times in history on a much larger scale, but, humans did not exist (and would not have been able to exist) at the time. The questions now are whether human actions are accelerating the process of global warming and possibly decreasing Earth’s future sustainability; and, if so, what, if anything…
Global Warming and the Threat on the Existence of Life on Earth Lise Scott AIU OnlineAbstract Global warming is a very complex subject with much debate involved with the subject. Although some people do not see global as a threat to all life on Earth, it is a very serious problem, because of warming temperatures including the melting of the polar ice caps and ice sheets, extreme weather patterns, including tornados and hurricanes. If the human race do not curb the problems of carbon emissions…
Global Warming Global Warming has become quite an alarming issue in the past decade. Although most people don’t find it directly affecting their everyday lives. This is the reason not much is being done about it. Some people are in complete denial of this phenomenon, while others are positive it is happening. I personally, believe global warming is happening. My argument is to prove global warming exists. It exists because of society’s everyday habits to use natural resources at an increasing rate…
Global Warming Real or Fake? Global warming is the slow increase of the temperature of Earth’s atmosphere. It is caused by the greenhouse effect which is caused by the increasing levels of carbon dioxide, CFCs, and other pollutants. Another thing that is causing global warming is methane from agriculture and animals. Also the increase of chemical fertilizers contributes to global warming. Chemical fertilizers are nitrogen rich. Nitrogen oxides have 300 more times the heat trapping capacity…
GLOBAL WARMING Global warming, also called climate change, has become a topic of concern over the past decade. Climate has changed drastically over the past decade, “From 2001 through Feb, 2011 the atmospheric carbon dioxide increased by 22.2% of the total increase from 1800 to 2001” (Pangburn). Although I wasn’t completely aware of global warming and it’s circumstances until recently, I can honestly say that it is a issue to be concerned about. Global Warming is an indisputable…
GLOBAL WARMING: NATURAL OR MAN-MADE There is no question that there is an increase in Earth’s temperature and we are experiencing what is referred to as global warming. The Earth has experienced this many times in history on a much larger scale, but, humans did not exist (and would not have been able to exist) at the time. The questions now are whether human actions are accelerating the process of global warming and possibly decreasing Earth’s future sustainability; and, if so, what, if anything…
What Are the Causes of Global Warming? What is global warming? According to NASA Earth Observatory, global warming is the unusually rapid increase in Earth’s average surface temperature over the past century primarily due to the greenhouse gases released as people burn fossil fuels. Global warming is the warming near the earth's surface that results when the earth's atmosphere traps the sun's heat. The earth is getting warmer. The changes are small, so far, but they are expected to grow and speed…