"decreased pollution" is correct and usable in written English.
You can use it when you are describing a decrease in levels of air or water pollution. For example: "Stricter laws and regulations have led to a decrease in pollution, making the air and water in this town much safer and healthier."
The likely benefits are no surprise — less foreign oil, cost savings, job creation, decreased pollution.
The lawmakers instead voted, 51 to 45, for a Republican alternative that would let the rules go into effect while a different study, one that would look at the increased, as well as decreased pollution, is under way.
Therefore, the application of lasers has become a hot topic among biomedical engineers because of their superior performance (e.g., noncontact micro-machining) and also high degree of purity, high-accuracy coherent beams, low cost for many materials, decreased pollution, and high working speeds.
Additionally, this study identified decreased pollution when compared to electricity generation from fossil fuels as another contributing factor to quality of life in communities with wind farms [15].
"It's a classic dilemma: when you build more highways, do you decrease pollution or increase traffic?
An aircraft engine that uses a novel gearing system could decrease pollution and increase the energy efficiency of air travel.
It also includes calls for voluntary reductions in emissions that scientists blame for global climate changes and subsidies for new technology to decrease pollution.
So far, several regulatory tools have been used to decrease pollution.
The scenario analysis demonstrated that impervious rate adjustment has the potential to reduce runoff peak and decrease pollution loading.
While the National Park Service's decision to ban snowmobiles from most national parks will decrease pollution (news article, April 27), it will not address the problem that started this controversy: the killing of Yellowstone's bison.
3. Research various contexts for which scientists and researchers may want to genetically alter trees; assess the validity of altering trees as a method of decreasing pollution and/or increasing production of tree-related products.
