The phrase "deteriorated environment" is correct and usable in written English.
You can use it when referring to a physical environment that has declined in quality over time due to a number of factors such as pollution or overuse. For example, "The prolonged drought has caused a severe deterioration of the environment in the region."
The investment bank warned the sectors face a deteriorating environment in consumer and corporate markets.
"Given the deteriorating environment, it becomes more difficult to achieve our guidance for the fiscal year".
But in this rapidly deteriorating environment, their capital could quickly evaporate.
Antagonism surrounding water issues in the former Soviet nations of Central Asia erupted today at a United Nations-sponsored forum here to try to rescue the region's deteriorating environment.
While greens welcomed the Channel tunnel as investment in public transport, he damned it as "designed to further increase our economic activity, exacerbating our rapidly deteriorating environment".
The recommendations were part of a broad report also covering such predictable subjects as a deteriorating environment, persistent poverty and the spread of weapons worldwide.
In the long run, given the deteriorating environment for Western oil companies in Russia, a bad deal over Kovykta may be a good deal for BP.
It developed into a significant field of study during the 1960s owing largely to a growing concern over the deteriorating environment.
And China's extensive growth over almost two decades is not only unhealthily dependent on foreign markets, but has been bought at the expense of a deteriorating environment and a worsening rich-poor divide.
Honda lowered its profit forecast for the fourth time this fiscal year, highlighting how executives in Japan and elsewhere are scrambling daily to adjust their expectations and business plans to the deteriorating environment.
