natural pollutant

However, humans have adapted to most of these natural pollutants.

Industrial, domestic, and natural pollutants contribute to poor air quality.

But people should be more concerned, he said, about bus and car emissions than the natural pollutants of horse droppings.

In fact, there are many more natural pollutants than pollutants that humans make.

Wetlands and vegetation filter out natural pollutants from the water. These processes occur naturally.

Justification The deduction of so-called natural pollutants cannot be justified from a health point of view.

Children are more susceptible to and suffer more adverse effects from natural pollutants than do adults."

Compared to existing legislation subtracting "natural pollutants" would allow for higher air pollutant values everywhere therefore weakening health protection against the aims of the directive.

Natural pollutants include wind borne dust in semi-arid regions, sulphur emissions from volcanoes and methane from swamps.

Water pollution is a particularly grey area, partly because there are always natural pollutants, including methane, in the water, making it extremely difficult to definitely prove a connection.

However, the amount of brine produced -- which contains high levels of salts and other natural pollutants from shale rock -- has received less attention even though it is no less important.

In many European regions, agriculture guarantees the existence of plant mass that prevents the desertification of the land, a phenomenon that leads to a significant increase in the natural pollutants in groundwater.

Natural pollutants occur during the pollination cycles of large numbers of plants, when a natural bushfire starts, or when loose dust and topsoil are blown away by the wind from exposed ground.

Justification When the quality of groundwater bodies is being assessed, the effect of any reduction in water volumes cannot be ignored, since such reduction leads to an increase in the concentration of natural pollutants.

A report released this week from EU body the European Environment Agency (EEA) found the highest levels of natural pollutants were in Spain, which frequently experiences forest fires, most recently this month.

But the water injected into wells is laced with a proprietary mixture of chemicals and sand, and the water returning from thousands of feet below the surface can also contain natural pollutants or even radioactivity.

In addition, conservation of the wetlands and mangroves will not only prevent extinction of the false water rat and other animals but it will protect our shores from wave action, reduce the impacts of floods and absorb natural pollutants and provide habitat for animals and plants.

Results from the European Arctic Stratospheric Experiment (Easoe) show that ozone levels reached a record low over much of the northern hemisphere in January, as chlorofluorocarbon (CFC) chemicals combined with natural pollutants from the Mount Pinatubo volcanic eruption to create "highly peturbed conditions" in the stratosphere.