Sentence examples for harmful contamination from inspiring English sources

The Outer Space Treaty, which the United States signed in 1967, requires that the exploration of the moon and other "celestial bodies" be conducted "so as to avoid their harmful contamination and also adverse changes in the environment of Earth resulting from the introduction of extraterrestrial matter".

- Louis Berger Group Scientific Report, November 2014: A New Jersey-based environmental firm, the Louis Berger Group, has found illegal levels and harmful contamination at well sites in Ecuador where only Texaco explored for oil - no other oil company.

There just aren't any.'" - Louis Berger Group Scientific Report, November 2014: A New Jersey-based environmental firm, the Louis Berger Group, has found illegal levels and harmful contamination at well sites in Ecuador where only Texaco explored for oil - no other oil company.

The strategies can be grouped as preventive i.e. starting off with low (or nil) infection levels in animals and on pastures, evasive i.e. moving animals away from pastures before harmful contamination levels are generated, or dilutive strategies i.e. lowering the ratio between susceptible and resistant animals (or lowering the overall stocking rate).

Several bacteria live in environments that are stressful for the organism, e.g. environments with harmful contaminations, lack of nutrition or environments with a high or low temperature.

Nitrate-N is an indicator of contamination from septic systems or wastewater recharge that may include potentially harmful contaminants such as synthetic organic chemicals (Janik 1987).

Potentially harmful element contamination from mining and smelting raises concerns due to possible health risks.

Among them, Cd and Hg were the most important contributors to potentially harmful elements contamination in Wanshan.

Toluene vapor is heavier than air and may travel along the ground, but harmful air contamination levels can be reached rather quickly by evaporation of toluene at 20°C.

To tackle the pollution problem, photocatalysis has been demonstrated as a low-cost and sustainable technology for removing harmful organic contaminations in air and water.

It is this kind of pollution problem -- with low, dispersed, but harmful levels of contamination -- that has proved least amenable to conventional technologies and is likely to be the most valuable niche for plants, Mr. Rock and other experts said.