No abstract

From March 2020 to early June 2020, Kosovo introduced various travel restriction measures for foreign nationals, including entry bans, closure of land and air border crossings, two-week quarantine, and self-isolation. From March to May, the country was almost completely blocked, where the activities of the tourism industry were strictly prohibited while businesses encountered great difficulties to operate and provide services, the number of jobseekers in the country increased significantly, precisely because of the cessation of activities, because this sector is considered to be one of the sectors that contributes the most to employment in our country, despite the fact that some of these businesses are family businesses. A significant number of employees in these sectors in our country may lose their jobs, as a result of the situation created, and this will further deepen the tourism industry, mainly due to the decline in the volume of remittances and tourism diaspora in Kosovo. While restrictive measures may have had a positive impact on curbing the spread of the virus, and preventing the escalation of the health crisis, the effect and consequences of closing the economy for months is severe for the tourism industry.

The purpose of this research is to determine the content of heavy metals in the lakes of Kosovo, lakes with heavy metals such as: (Hg, Cd, Pb, As, Fe, Zn, Ni, Cu), in water and water sediment in Lake Radoniq and Lake Badovc. Determination of heavy metals (Pb, Cd, Hg, As), in muscle tissue and fish organs. Parameters as an indicator of fish safety for food, indicator of environmental pollution (Kosovo lake bioten). Age of fish, the amount of fat are important factors that affect the accumulation of heavy metals in fish. This indicates that the bioaccumulation of heavy metals is a special process and indicates the concentration of heavy metals in the body of the fish. The high concentration of Fe in fish organs is of particular importance for hemoglobin and its role in fish. Metal indicators such as biocumulation factors are different, for example, for Pb can be increased with high concentrations compared to international parameters which depends on the species of fish and the location of catching s137 fish, the concentration of heavy metals in the Lake and the impacts from agricultural activities. The concentration of heavy metals in the body of aquatic life depends on the way in which heavy metals penetrate, giving the body the opportunity to detoxify them through metabolism. Metabolism means the exchange of substances, the uninterrupted exchange of matter between the living organism and the external environment. This process is the basis of life, which allows a cell to grow and reproduce, maintain its structure and respond to its environment.

The circulation of heavy metals in nature is characterized by high toxicity. However, the effects depend on the amount of toxic, the form of exposure to toxicity, the types of species exposed, age, sex, genetics and nutritional status, and on the consequences in ecosystems. With the onset of the COVID-19 pandemic, the environmental situation in some regions has deteriorated even more due to poor monitoring by state institutions. The challenges that await us in the future are complex and hence we risk not knowing how to meet the future challenges. The situation with toxicity and pollution is complicated by the COVID-19 pandemic, which for the first time in this century has turned into a global pandemic. Although we were not prepared to cope with this pandemic, still we succeeded to manage it better than the previous pandemics. High concentrations of heavy metals such as arsenic, cadmium, lead, and nickel are among the metals that are dangerous for the public health of citizens. Metallic elements are characterized by toxic effects, especially with the consumption of food products. High concentrations cause great damage to human and animal organs but sometimes even small concentrations of it can have harmful effects. The increase in toxic concentration has affected industrial development, poor waste management, the release of toxic gases from industrial activities, as well as use of pesticides and herbicides in agriculture. High toxicity causes health damage, e.g. resulting from human exposure to metal toxicity and the use of contaminated foods. The heavy metals present in the environment such as Cu, Fe, Mg, Mn, Ni, Se, Zn, Co, Cr, are essential nutrients required for various biochemical and physiological functions.

Abstract:Concerns and uncertainty about the life on Earth are constantly growing, today greater than ever before, as a result of human activity. In this regard, the major dangers that threaten our planet include uncontrolled utilization of natural resources, environmental deterioration and environmental pollution over Earth's regenerating possibilities. Whereas, the main causes of pollution are deforestation, erosion, greenhouse gas emissions, poor urban and industrial waste control and uncontrolled mining activities. All of these lead to serious consequences for life on Earth, because of the natural resources of the soil and its capacity to absorb waste gases (CH4), and the release of heavy metals such as Pb, Zn, Cd, Cu, Fe and As, which are the biggest soil pollutants. The Earth is being cemented, and its regenerating capacities are being diminished every day.UDC Classification: 502/504; DOI: http://dx