In lieu of an abstract, below is the first paragraph of the paper.In the past decade alone, it has become increasingly important that consumers find alternative energy resources to provide some relief for the environment. Carbon based fuels, like propane and natural gas, are running in short supply and it wonu27t be long until another fuel source will be needed to sustain the energy needed for a growing world. Not only are scientists concerned about the energy crisis, they are also concerned with ozone depletion as a result of methane and carbon dioxide buildups in the atmosphere. This excess methane comes from a source that is well known wondwidelivestock. Livestock are the brunt of the dairy and meat industry across the globe and as long as there are livestock around, there wlll always be waste. It is true that livestock are some of the biggest producers of gas, methane in particular, and something must be done. This gas is collecting in the stratosphere and damaging the ozone layer. According to Renata De Winter-Sorkina, a writer for Atmospheric Environment, creating holes in the ozone layer will lead to an increase in UV radiation that reaches the Earthu27s surface. In turn, this will also increase in the incidence of skin cancer, cataracts, and impaired immune systems, cause damage to forests and aquatic organisms, and lead to a decrease in crop yields. Consumers canu27t un-do the damage that has already been done to the ozone layer, but scientists have been looking for ways to decrease the emissions causing the devastating problems in our atmosphere.
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机译：下面是本文的第一段，而不是摘要。仅在过去的十年中，消费者寻找替代能源来减轻环境负担变得越来越重要。丙烷和天然气等碳基燃料供不应求，直到需要另一种燃料源来维持不断增长的世界所需的能量，这种燃料才需要很长时间。科学家不仅关注能源危机，还关注由于大气中甲烷和二氧化碳堆积而导致的臭氧消耗。过量的甲烷来自众所周知的野生动物源。畜牧业是全球奶业和肉类行业的首当其冲，只要周围有牲畜，总会有浪费。确实，牲畜是一些最大的天然气生产商，尤其是甲烷生产商，必须采取一些措施。这些气体聚集在平流层中并破坏了臭氧层。据《大气环境》杂志作者雷纳塔·德·温特·索尔基纳（Renata De Winter-Sorkina）称，在臭氧层中形成孔洞将导致到达地球表面的紫外线辐射增加。反过来，这也将增加皮肤癌，白内障和免疫系统受损的发生率，对森林和水生生物造成破坏，并导致农作物减产。消费者无法消除已经对臭氧层造成的破坏，但是科学家一直在寻找减少排放的方法，这些排放会造成我们大气中的破坏性问题。
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