In the 1950’s, some welders started to use carbon dioxide as a shielding gas as an alternative to the more expensive argon and helium. It proved to be ineffective for welding aluminum and magnesium because it reduced the weld quality, so it is rarely used today. The use of any shielding gas containing oxygen will quickly contaminate the tungsten electrode and should not be used in GTAW. GTAW is a widely used process for welding metal. Its arc is established between the tip of a non-consumable tungsten electrode and the work piece with a shielding gas applied to protect the arc and the weld pool area.
In this paper, I will write about the two major cause of AIR and WATER Pollution in China, chemical pollutants in the air and industrial and agricultural waste dumped into the groundwater. Although there are other pollution problems, polluted air and water are the largest, and have become the biggest threats to Chinese people’s health. Air pollution happens when there is the presence of abnormal concentration and abnormal constituents in the air. We know that fresh air is needed for a healthy life. That is why people in China go out for morning walks so that they can breathe as much fresh air as possible because most of people feel that the morning air is better and so it is common for Chinese.
The Maryland emissions board should be reactionary in making this happening, and especially hold power plants accountable if violations happen. New systems and technologies should be used or created in reducing the creation of pollutants. Even though plant owners may be reluctant in doing so due to cost and other factors, policymakers have the authority and should exercise that power by deciding what steps are needed in the improvement of the effect and role of what particle pollutant matter has brought. The community can step up in monitoring and being a watchdog, mainly because this is a direct effect of their community being affected. Air quality standards must consistently be reviewed and changed according to the statistics shown.
Environmentalist believed that the world was in jeopardy whereas “anti-environmentalist believed that no matter the environmental effect, social and economic health and progress were necessary for people and civilization to prosper” (Botkin & Keller, 2011, Ch. 1). Ultimately, this movement helped make the environment just as important as social and political issues. It has also help open many eyes in regard to finding ways of addressing, solving, and managing the environment and its issues. 2.
For over a century now plastic has made our lives safer, from improving the strength of our cars, to the development of new and improved medical devices. However, the degradation of these plastic products is a long process when simply dumped into landfills with general trash, or in other cases, dumped into our precious oceans. In order to maintain our consumption of plastic, save money, and protect our environment, there must be a more efficient system set up for recycling the majority of plastics consumed around the world. Plastics are quite possibly the most important material used throughout our daily lives, and without it we could not accomplish much of what we do every day. The development of plastics can be credited for the widespread commercialization of electronics over the past century.
Human beings alter natural systems and have always had an impact on the environment. Environmental problems have a cultural and social context; so, understanding the role of cultural, social and economic factors is vital to the finding workable solutions for current problems. Global environmental changes present unprecedented challenges to humans and the ecosystems upon which they depend. The need for interdisciplinary approaches to solve such multidimensional challenges is clear. Topics of great importance, worth in-depth
All those examples are able to reduce pollution with those easy ideas we can help the environment. In the future I hope they come up with electric cars or maybe even a water powered engine. Another reason for Global warming is Garbage. The things that we put in the garbage take a long time to compose and can release toxic fumes into the air. We already solved some of the problem by recycling and composting but there’s still a huge amount of garbage.
It is a very popular chemical and is used over one billion tons just in U.S. every year. According to the high usage it may be thought that DDT’s are completely harmless and beneficial, but when the truth is surfaced it can easily be seen that except a few positive effects, the use of pesticides has negative effects on economical, agricultural and enviromental factors. First of all, the negative affects of pesticides outweigh the positive ones. The most hazardous affect of this chemical is its damaging the balance of environment by ruining the ecosystem Once it is applied, it not only effects the products, but also the organisms that live near them or eat them. Thus, the chemical enters the natural food chain.
Constant exposure can seriously endanger their physical and mental health. The use of harmful pesticides on our food causes great concern among the medical community and because of this people are becoming more aware of pesticides potential danger. A. Swenson and S. Bushhouse, co-authors of "Childhood Cancer Incidence and Trends in Minnesota, 1988-1994", both state, “all cancers combined increased an average of 1% per year and brain cancer increased 2% per year.” They also go one to say in their book that “In teens aged 15-19 between 1973 and 1995, cancer incidence rose for the following: non-Hodgkin's lymphoma 128%, testicular cancer 65%, ovarian cancer 78% and all cancers combined 24%.” This disturbing research is revealing more
The situation to Donora was extreme, but it reflected a trend. Air pollution had become a harsh consequence of industrial growth across the country and the world. One of these organizations named The Clean Air Task Force (CATF), supports that Air Pollution isn’t good for our world, and the CATF is trying to reduce Air Pollution happening. The CATF was organized by more than two dozen state and local national and public organizations. The CATF says, “In 2005, they cut 60% cuts in health and environmental pollutants from all these plants.” (CATF- “About