Human Activity and the Earth
There is no doubt that human activity has an effect on the planet. We see the evidence of mankinds endeavors all around us. While some of mans accomplishments1, such as the building of transportation systems and the consistent supply of potable water, have made Earth a better place for people to live, they have not come without cosplayt. Overall, it seems that human activity harms the Earth more than it benefits it.
For example, the transportation systems that benefit mankind also create pollution and use up valuable energy resources. While we cannot do without transportation these days, we cannot ignore the fact that it has an adverse2 effect on the planet. Furthermore, those advances that benefit people do not benefit al the life on Earth. Deforestation endangers many animals, and mankinds great thirst for water and other resources leads to the extinction3 of many plant forms. In addition, accomplishments such as the supply of potable water to a community are only response to problems that mankind created in the past. It was man that made the water unfit to drink in the first place. Finally, the damage that human activity causes will eventually have a negative effect on people. They will also suffer the effects of pollution and diminishing natural resources.
In conclusion, it seems apparent that mans activity benefits primarily himself, not the Earth. Moreover, those benefits are only short-term advantages, and man will also suffer the negative effects of his activity in the future. The Earth does not have an inexhaustible supply of resources, so every effort should be made to conserve4 resources and limit the impact of human activity on the planet.
参考译文：
人类活动与地球
人类活动无疑会对地球导致影响。大家周围随处可见人类活动的征兆。虽然人类某些收获，如运输系统的打造与饮用水持续的提供等，使得地球成为一个更合适的人类居住的地方，但这类收获的获得也付出了代价。大体上，对地球而言，人类的活动好像弊多于利。
比如，运输系统对人类有利，却会制造污染，并用尽珍贵的能源。目前大家虽然不可以没运输工具，却也不可以忽略运输工具对地球有不好的影响的事实。除此之外，使人类获益的这类进步未必能使地球上所有生物都获益。砍伐森林危及很多动物，而人类对水和其他资源的需要很大，因而致使很多植物绝种。再者，像提供社区饮水的这种收获，就只不过人类在为过去所制造的问题做出回话而已。是人类自己第一使水变得不合适饮用的。最后，人类活动所致使的损害终究会对人类本身产生负面的影响。污染及日益降低的天然资源所导致的影响也会使人类受害。
总之，人类的活动显然主要仅对人类自己有利，但却对地球不利。而且，那些益处是短暂的，以后人类还是会因我们的行为所导致的负面影响而受害。地球上的资源并非取之不尽、用之不竭的，所以大家应该尽全力保存资源，限制人类活动对地球的冲击。
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