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Climate change and I
The United Nations Climate Change Conference in Copenhagen, the Danish capital, held in December 2009, made the subject of climate warming as the world's most hot topic of the global environmental field.The phenomenon of global warming appeared as early as the second half of the last century, concerned by scientists around the world, while during three decades nearly, the warming trend has not changed but increased, bringing a series of serious results.However, faced with global warming, different people have different views.Some people believe that global warming is entirely nature's own laws, with which human activity has nothing to do;someother people recognize it’s being more hot but believe that it will not lead to that serious consequences the scientists imagined.In my opinion, there is no doubt that global warming and human activities are closely related.Since the result of climate warming is very serious, we need to make effective action to control global warming.The following will be divided into five parts, the first section is the introduction, and the second one will analyze why human activity causes global warming;the third part will analyze the serious consequences of global warming;the fourth part will discu that what human beings, especially ordinary people can do for the control of global warming;the last part is a summary text of this eay.Earth observations indicate that climate warming is mainly caused by human activity, which may be a good thing as it shows that human beings can work to change the trend of global warming.Although we can not rule out natural variability is also a reason of climate warming, but the observed climate change in the past few decades is likely mainly caused by human activity, which caused a great ma of carbon dioxide.Human factors include the rapid increase in population, the use of foil fuels, all of which will bring a lot of carbon dioxide.And the same result would be caused by the destruction of forests, because forests have ability of absorbing carbon dioxide.Human activity leading to climate warming is mainly industrial production activities, particularly in the developed industrialized countries, however people's daily life, such as the use of air conditioners, contribute to climate warming as well.Those who believe that human activity does not cause global warming people, either is poor of scientific knowledge, or is no sense of responsibility for the security of all humanity and the survival of future generations.Then, let us take a look at global warming in terms of what kind of disaster it means for human.According to the scientists predict, climate warming will lead to a series of serious consequences, including the followings.First, the Earth will have more space to become ocean, floods are becoming increasingly frequent.The chance of flooding suffered and other natural disasters will increase;the capacity of human
beings against these disasters will be challenged.Second, the water temperature increasing could make the Antarctic Peninsula and the Arctic Ocean ice melt, which is the direct cause of rising sea levels, polar bears and walrus are likely to die out at the same time.Thirdly, many small islands and coastal cities will be inundated, while the world's population live in the largest cities like New York, Shanghai, Mumbai, Tokyo, most of which locating on the coast side, which means that if temperatures continue to rise, the vast majority of people have to move to higher altitude areas.Fourth, people will suffer the food shortage, because agricultural production is deeply dependent on climate.Climate warming will make many places dry, hot, not suitable for planting crops.A severe food problem will become even more severe.From the serious consequences climate warming will bring about, we can see, human beings must act to combat global warming as controlling global warming is related to global human survival.Finally, to face climate warming, mankind is not the inability to be able to, because human activity is the main reason for global warming, as the Chinese saying goes put it, “ Let him who tied the bell on the tiger take it off ”, human beings can control the climate warming, as long as they ready.So, what human beings should do to reduce carbon dioxide emiions to control global warming then? For the politicians from various countries, who run the world, is to reach a consensus for responding to the problem of global warming.Developed countries should, through financial and technical aistance, help developing countries improve their capabilities to reduce carbon dioxide emiions.Ordinary people like me, can also contribute to controlling global warming.For example, we should reduce the use of disposable chopsticks, which will help to reduce deforestation;we should reduce the use of air conditioners, refrigerators and other appliances, which will directly reduce carbon dioxide emiions;we should choose to walk or ride a bicycle at most time instead of the ride on cars and other motor vehicles, to reduce energy use and ultimately reduce carbon dioxide emiions.We can really do so many things as long as we want to;if everyone make a little bit of contribution, controlling global warming is no longer impoible.In conclusion, the scientific observations indicate that climate warming is mainly due to exceive carbon dioxide emiions caused by human activities;climate warming will bring a variety of serious consequences include sea-level rise;the common human need immediate action to reduce carbon dioxide emiions to curb global warming.As long as each of us is making efforts towards this goal, we were able to better control global warming to make the environment more suitable for the survival of humanity.2009年12月份在丹麦首都哥本哈根召开的联合国气候变化大会使气候变暖这一话题成为全球环境领域最受关注的话题。气候变暖的现象早在上世纪下半叶就受到全世界科学家们的关注，而近二三十年来，气候变暖的趋势并未改变，反而有加剧的迹象，并带来了一系列的严重后果。然而面对气候变暖，不同的人有不同的观点。有的人认为气候变暖完全是大自然的自身规律，与人类活动无关；也有的人认为气候变暖并不会导致科学家们想象的那么严重的后果。在我看来，气候变暖毫无疑问与人类活动是有很大关系的，而且气候变暖的结果非常严重，我们必须做出有效的行动以控制气候变暖。以下将分四部分，第一部分将分析为什么人类活动是气候变暖的原因；第二部分将分析气候变暖的严重后果；第三部分则将论述人们特别是普通人在日常生活中可以为控制气候变暖做什么贡献；最后一部分总结全文。
科学观测表明，气候变暖主要是由人类活动引起的，这对人类来说可能是一件好事，因为这表明人们可以通过努力改变气候变暖的趋势。虽然我们不能排除气候变暖也是自然变化的结果，但是在过去的几十年中所观测到的气候变化很可能主要是由人类活动引起的，也就是人类活动不断增加的二氧化碳所导致的。人为因素包括人口的激增、使用化石燃料，这些活动都会排放大量的二氧化碳，而对森林的毁坏同样导致空气中二氧化碳的增加，因为森林具有吸收二氧化碳的功能。在人类活动中对气候变暖影响最大的是工业生产活动尤其是发达工业化国家的工业生产活动，与此同时人们日常生活，如使用空调等都在对气候变暖做出贡献。那些认为人类活动不会引起气候变暖的人们，要么是科学知识不够，要么是对全人类以及子孙后代的生存安全没有责任感。
然后，让我们先来看看气候变暖对于人类而言意味着什么样的灾难。据科学家们预测，气候变暖引起一系列的恶性后果，主要包括：第一，水域面积增大，洪水泛滥。地球将有更多的面积成为海洋以及河流，雨季将延长，水灾正变得越来越频繁。遭受洪水泛滥的机会增大、遭受风暴影响的程度和严重性加大，人类对抗水灾的能力将面临挑战。第二，水温升高可能会给南极半岛和北冰洋的冰雪融化，两极冰山的融化是海平面上升的直接原因，同时北极熊和海象有可能灭绝。第三，许多小岛和海滨城市也将被淹没，而全世界人口最集中的大城市如纽约、上海、孟买、东京等都位于海岸边，这意味着如果气温继续上升，绝大多数人都要搬家到海拔更高的地区。第四，粮食生产面临挑战，因为农业生产对气候依赖程度很高。气候变暖将使靠近地球上很多地区变得干旱和炎热，不适宜种植庄稼，这将使粮食生产受到严重影响，现在已经严峻的粮食问题将变得更加严峻。气候变暖将带来严重后果，由此可见，控制气候继续变暖，关乎全球人类的生存，人类必须行动起来，对抗气候变暖。
最后，面对气候变暖，人类并非无能为能，因为人类活动是气候变暖的主要原因，正如中国一句古语所言“解铃还须寄铃人”，人类可以控制气候变暖，只要他们愿意。那么，人类应该怎样做才能减少二氧化碳的排放从而控制气候变暖呢？对于世界各国的政治家们来说，就是要达成共识，共同应对，发达国家应该通过资金和技术援助发展中国家提高减少二氧化碳排放以控制气候变暖的能力。而对于像我这样的大学生来说，同样也能为控制全球气候变暖做出贡献。例如，我们要减少使用一次性筷子，这将有助于减少对森林的砍伐；我们要减少使用空调、冰箱等电器，这将直接减少二氧化碳的排放；我们要减少乘坐汽车等机动车国内，尽量步行或者骑自行车，这将减少能源使用并最终减少二氧化碳的排放。只要愿意，我们可以做的事情太多了，每个人都做一点点贡献，控制气候变暖就不再是不可能的事情。
总之，科学观测表明，气候变暖主要是由于人类活动过度排放二氧化碳引起的，而且将带来包括海平面上升等各种严重的后果，人类需要立即行动起来共同减少二氧化碳的排放以控制气候变暖。只要我们每个人都努力朝这个目标行动，我们就能更好的控制气候变暖，就能使人类的生存环境更适宜。
