environmental pollution consists of different types of pollutants in air, soil, and water. due to the fact that plants can respond to environmental pollution, they can be used as bio-indicators for environmental monitoring. air pollution in areas with oil and gas refineries nearby is an important problem. this study aims to survey the effects of gas refinery air pollutants on conocarpus erectus...

liberalization of international markets affects level of pollution in developing countries more than in developed countries. therefore the impact of trade liberalization on environmental pollution is a challenge for policy makers. in this paper auto regressive distributed lags (ardl) and error correction model (ecm) methods are employed for a study of the relationship between trade liberalizati...

Qualitative status of the environment is signaled by a group of indicators, known as bioindicators, several of which are responsible for showing progressive impacts of different types of pollutants. Having addressed the influence of various bioindicators in environmental pollution, it has been revealed that bioindicators are sensitive to any disturbance in any environment. With regards to the p...

Many notable pollution problems occur in industries where production is carried out under vertical coordination arrangements that are characterized by conditions of double moral hazard. In contrast to situations characterized by full informatio n, we show that standard prescriptions of environmental economics do not apply. Imposing a Pigouvian tax equal to the marginal cost of pollution does no...

Exposures to environmental pollution remain a major source of health risk throughout the world, though risks are generally higher in developing countries, where poverty, lack of investment in modern technology and weak environmental legislation combine to cause high pollution levels. Associations between environmental pollution and health outcome are, however, complex and often poorly character...

introduction discussion of sustainability and sustainable development, regardless of towns and cities would be meaningless cities as the main factor causing instability in the world are, in fact, the concept of urban sustainability and global are stability. environmental crises and urban issues such as air pollution, water, soil and water resources and agricultural land use renewable, global wa...