Global Warming
There is one of the most nsitive global climate issues for years, which is global warming. In general, we know that the origin of global warming is the emi玫瑰话语ssion of清蒸乌鱼 carbon dioxide. It was verified that the relationship between carbon dioxide and temperature: when there is more carbon dioxide the temperature gets warmer. This topic should be discusd under current situation to advocate people concerning with this vere environmental issue. Meanwhile, people should consider how to reduce the emission of carbon dioxide and take some actions to stop global warming. What is global warming? What caud global warming? What are the negative effects caud by global warming? What can we do to save the earth? Are there any positive effects? In the next paragraphs, I will explain the questions in details.
What is global warming? Global warming is the increa in the average temperature of Earth's near-surface air and oceans since the mid-20th century and its projected continuation (Brown 22). According to the 2007 Fourth Asssment Report by the Intergove
rnmental Panel on Climate Change, global surface temperature incread 0.74 ± 0.18 °C (1.33 ± 0.32 °F) during the 20th century (别字Keppler). In nearly 100 years, the average global temperature goes through four fluctuations: cold, warm, cold again, and warm again. After 1980s, the temperature was ascending obviously.
What caud global warming? It is caud by ve什么是法西斯ral factors. First, population explosion is one of the main factors of global warming; it also threatens the balance between man and nature. Second, atmospheric pollution is being on the ri, and it has already become an international major problem. It is also the basic problem of global warming. Third, marine ecology and environment took a turn for the wor. That may lead to the damage of fresh water resouces. Forth, erosion, salinization, and dertification of land make the ecological environment deteriorated, and flood and sand storm may happen more frequently. Fifth, the forest resources are sharply decread by natural changes and human actions. Sixth, acid rain can destroy the forests, acidate lakes, and endanger animals. Seventh, water pollution destroyed the balance between the demand and supply of fresh water. Last, toxic chemical wastes have threats on the ecological environment on
the earth’ surface. (Brown 46).
What are the negative effects caud by global warming? This rious environmental problem generates amount of destructive effects to the entire planet: ice melting, climate change, animals and plants’ extinction, and threat of human society. Primarily, as the temperature increas, ice melting is regard as the most intractable issue. Melting of ice rais the a level. Jonathan Overpeck, an earth scientist at the University of Arizona in Tucson thinks a level ri will occur at rates of up to a meter or three feet per one hundred year (Brown蘑菇炖豆腐 102). This statistic reveals the raising temperature is detrimental to global climate and the main reason why global warming results in a level rising are strongly due to thermal expansion (Brown谁与争锋的前一句 102). When the temperature of the a becomes warming than before, the a level will ri. In addition, as a result of ice melting, landscape also transforms. Meanwhile, global warming also caus climate change to bring about many other awful effects such as more destructive storms, more fire disaster and more inten droughts.
The cond effect of global warming is to make many animals and plants endangered. Considerable data verified that more than 200 native plant species in the United States have gone extinct; more than 760 plant species in the U.S. are federally listed as endangered or threatened and 20 percent of our native plant species are in decline and on a conrvation watch list (Keppler). As same as plants, there are also many endangered animals generating which are imputable to global warming, s染发uch as Polar bears粤语拼音对照表. Some scientists believe the Polar bears in Alaska would become extinct in 50 years' time (Keppler). The data warn us that we call for paying effort on survival of species.
The last negative effect of global warming is more related to humankind. Global warming will also threaten human society. It will cau the infectious dias too easy to spread and infect. Bacteria will hard to control through fast breeder reactor, and threat our lives. The hou will be eroded by destructive incts and it may lead a vagrant life eventually. What’s more, global warming impedes outdoor activities. Some outside entertainment sports such as skiing and snowboard will be influenced by ice melting and climate chang
e.
Nevertheless, when we face the negative affects which caud by global warming, what we could do to against it? A survey conducted by Yale University and George Mason University found that the number of Americans who believed that climate change was a joke or scientific conspiracy had more than doubled since 2008, to 16 percent of the population from 7 percent. An additional 13 percent of Americans said they thought that even if the planet was warming, it was a result solely of natural factors and was not a significant concern (Brown 158). This survey expos a certain number of people do not en it as a vere problem. In order to arou people’s consciousness to take actions against global warming, enacting some specific regulations and laws are indispensable by the government. First, forest protection is requisite; one type of forest protection is to purcha land to cure it. Furthermore, enhancing the international corporation to consist an Alliance is also an effective method to spread the concept of conrving sources. At climate change conference which held in 2009 at Copenhagen. There are five nations, including China and the US, reached a deal on a number of issues, such as a re
cognition to limit temperature ris to less than 2C and they got the deal to promi to deliver $30bn (£18.5bn) of aid for developing nations over the next three years, and outlined a goal of providing $100bn a year by 2020 to help poor countries cope with the impacts of climate change (Revkin). Of cour, education is esntial as a portion to prompt children’s environmental consciousness. Through the education, it conveys an appropriate environmental concept to the kids, for instance: taking public transportation, saving energy and recycling waste substance.
