GRE写作Issue部分精品素材分享之臭气污染

2015年08月12日14:41 来源：小站整理

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臭氧层的破坏

It took the reality that CFCs were destroying the sensitive but protective ozone layer to encourage large chemical companies to begin a gradual phase-out of these substances, even when scientists had already discovered the terrible effects of the chemical combination. To slowly stop usage of such obviously dangerous substances is not enough, for even with current conditions, it is estimated that the damaged ozone layer will require at least 100 years repairing itself. In the interim, we are risking danger to the food chain, global warming, and increased cases of skin cancer. Rather than risk these catastrophes, we should call for the immediate phase-out of CFCs, as well as to improve energy usage, plant trees, and curb the population explosion as supplemental methods to improve the environment.

空气污染物对健康的影响

With the great concern surrounding the destruction of the earth‟s atmosphere due to air pollution, the immediate and direct harm caused to the human body is often over-shadowed. While many are aware that our careless use of hazardous chemicals and fossil fuels may leave the planet uninhabitable in the future, most overlook the fact that they are also causing real damage to our bodies at this moment. Such pollutants cause damage to our respiratory system, leading to the fluctuation of the life span of an individual depending on a number of conditions. Amongst these conditions are the individual‟s specific geographic location, age, and life style.

In order to understand how air pollution affects our body, you must understand exactly what this pollution is. The pollutants that harm our respiratory system are known as particulates. Particulates are the small solid particles that you can see through a ray of sunlight. They are products of incomplete combustion in engines (example: automobile engines), road dust, and wood smoke. Billions of tons of coal and oil are consumed around the world every year. When these fuels burn, they produce smoke and other by-products into the atmosphere. Although wind and rain occasionally wash away the smoke given off by power plants and automobiles, much still remains.

燃料对环境的影响

As time passes, an increasing amount of capital will be spent on fuel and energy to produce goods. It is a long-term incentive to find alternative energy, such as solar energy, that will not deplete at the rate fossil fuels do, and after an initial investment, take very little monetary capital to maintain. This move must go hand-in-hand with current technology, in part because technology depends on its successful integration into the existing system. It is also important to achieve integration among major economic sectors, such as agriculture, auto manufacturing, and the oil industry. If changing technology is incorporated into current production methodologies, large capital expenditures can be minimized or folded into the overall business plan in a sensible way.

全球化贸易和交通对环境的影响

As more global corporations take over most of the aspects of farming, local resources and labors of small farms are decreasingly vanishing. This caused the people to buy and eat food that are grown overseas instead of the local areas, thus, causing and encouraging the amount of international transportation.

The transport division is a significant contributor to local air pollution, noise annoyance, intrusion to landscapes, congestion and high fatality rates. Transport also damages the global environment. It is contributing to two main global environmental problems, which are the greenhouse effect and the depletion of the ozone layer. Even though the effects of globalization contributed to many environmental defects, some may argue that free trade will avoid the efficiency losses associated with protection. It will reinforce economies of progression, and entrepreneurs are provided with an inspiration to seek new ways to export or compete with imports, a situation that offers more opportunities for learning and innovation. Their belief is that trade liberalization will likely have a positive effect on the environment by making the contribution of resources more efficient, promoting economic growth, and increasing general welfare.