Current policy is to suppress all human caused fires and to evaluate natural fires, examining the benefit or detriment they may pose on the ecosystem.
These data highlight the potential risks that non-ferrous metal mining, smelting and processing operations located in the Bor area may pose to aquatic ecosystems within the lower Danube Basin.
Aquatic environments are often contaminated with complex mixtures of chemicals that may pose a risk to ecosystems and human health.
In addition, strategic use of such diverse information as structural properties of chemicals, non-targeted environmental surveillance, biomonitoring, and modeling tools, are needed for identification and quantification of relevant exposures that may pose a threat to ecosystems or human health.
A screening-level assessment of the potential impact of the chemicals commonly used in fracking was carried out and showed that due to their wide range of physicochemical properties, these chemicals may pose additional pressure on freshwater ecosystems.
Anthropogenic chemicals entering freshwater via sewage effluents and other sources may pose a potential threat to aquatic ecosystems; therefore, environmental monitoring is a key issue in order to draw unbiased conclusions about the toxic effects on living organisms.
Setting aside the overarching threat that EDCs may pose to animal and human health and ecosystem sustainability, in practice, effects of EDCs may be of concern because of small effects on the long term health and productivity of domestic animals [ 39], particularly if they are acting in conjunction with other adverse influences.
The effects of inadvertent weather modification may pose serious threats to many aspects of civilization, including ecosystems, natural resources, food and fiber production, economic development, and human health.
Acidification of aquatic ecosystems that are drinking water sources may pose the prospect of enhanced release of As from sediment to water as well as reduction in water levels of Se.
But polygamy may pose some negative externalities.
