However, E85 can further reduce emissions of certain pollutants as compared to conventional gasoline or lower volume ethanol blends.

However, these do not remove certain industrial pollutants, such as volatile oils, and excess simple molecular gases.

As with other marine mammals, pilot whales are susceptible to certain pollutants.

Studies have also found that indoor exposure to certain pollutants routinely exceed maximum Federal standards for outdoor air.

The idea is to make fish that glow when they encounter certain pollutants, the marine equivalent of a canary in a coal mine.

It also blackens in the presence of certain atmospheric pollutants, although this can be reversed.

Biological factors also contribute to the breakdown of certain pollutants.

It is accepted now that drinking water in many areas contains certain pollutants which are undesirable.

It also suggests that the rate of decline in certain pollutants is decreasing.

This action programme must make the authorities, industry and the general public realise how certain pollutants can affect human health.