Pollution is the addition of pollutant to the environment that causes an adverse effect to the life.
Land use regression models were developed for each pollutant to predict average outdoor air pollution levels for the entire pregnancy at each residential address.
"It's a violation of the Clean Water Act to add a pollutant to water, whether it causes harm or not".
A Supreme Court decision earlier this year required the agency, once it had established that carbon dioxide was a pollutant, to start regulating emissions from vehicles.
On the other hand, the relatively high ratio of sulfur (a major pollutant) to nickel in most nickel concentrates increases the burden of sulfur containment in the smelters.
If the environmental agency determines that carbon dioxide is a dangerous pollutant to be regulated under the Clean Air Act, it would set off one of the most extensive regulatory rule makings in history.
The E.P.A. says that sulfur dioxide and nitrogen oxides, another pollutant to be reined in by Duke Energy under the settlement, are significant contributors to acid rain, smog and haze.
Diesel fuel is a pollutant to the environment.
In such a condition, we cannot expect the pollutant to get degraded much.
The THQ is a ratio of determined dose of a pollutant to a reference dose level.
Since the 1980s, ozone has been believed to be the most damaging air pollutant to crops.
