新西兰惠灵顿作业代写:卡特里娜飓风

2019-03-05 21:45

在全球范围内，对全球变暖及其可能造成的毁灭性影响的认识已大大提高。每一场自然灾害，无论是印尼的海啸、巴基斯坦的地震、美国卡特里娜飓风的到来，还是喜马拉雅山冰川的融化，都与二氧化碳排放、温室效应和全球变暖有直接的媒体联系。这种现象，再加上供应的不稳定和化石燃料成本的上升，将导致美国和英国核电的扩张。随着全球各国政府看到核能发电的好处，政府对核能使用的限制正在慢慢解除。随着核能发电的增加，各大洲的政府将努力开发可再生能源来发电。尽管在过去的三十年中，各方共同努力，可再生能源并没有取得多大进展。全球近90%的能源生产来自化石能源，其余大部分来自核能。风能和水能只能在合适的地点利用，这些地方有大量的降雨、水流湍急的河流或适合建立风电场的条件。能够获得化石燃料、石油、天然气和煤炭的国家当然将继续严重依赖这些能源。然而，排放的威胁和由此造成的臭氧层损耗将推动所有国家发展替代能源。作为汽车和航空运输必需品的石油成本不断上升，将导致除基本原因外，石油作为燃料的使用量减少。
新西兰惠灵顿作业代写:卡特里娜飓风
All across the globe, awareness on global warming and its possibly devastating repercussions has heightened considerably. Every natural calamity, be it the Tsunami in Indonesia, earthquakes in Pakistan, the arrival of the Katrina in the United States or the melting of the glaciers in the Himalayas finds an immediate media connection to carbon dioxide emissions, the greenhouse effect and global warming. This phenomenon, coupled with the instability of supply and the rising cost of fossil fuels is going to lead to an expansion of nuclear power both in the USA and the UK. Governmental restrictions on use of nuclear power are slowly being dismantled as governments across the globe see the advantages of going nuclear for power generation.Along with increase in nuclear power generation, governments across continents will try to develop renewable energy sources for power generation. Renewable energy has not really made much headway despite concerted efforts in the last thirty years. Nearly 90 % of the global energy production is obtained from fossil sources and most of the rest comes from nuclear power. Wind and hydro energy can be harnessed only in suitable locations that have access to huge amounts of rainfall, fast flowing rivers or conditions suitable for setting up wind farms.Countries with access to fossil fuels, oil, gas and coal will of course continue to depend heavily upon these sources for power. However, the threat of emissions and consequent ozone layer depletion will nudge all countries towards the development of alternative sources. The rising costs of oil, essential for vehicular and air transportation will lead to its curtailment for use as as fuel for all but essential reasons.

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