Get access to latest Afghanistan environment and pollution tenders and bids. Find business opportunities and government contracts for Afghanistan environment and pollution tenders, government environment and pollution tenders Afghanistan, global environment and pollution tenders, Afghanistan environment consultancy tenders, Afghanistan pollution control tenders, Afghanistan waste management tenders. Find Afghanistan environment and pollution bids, tenders, procurement, RFPs, RFQs, ICBs. The economy of Afghanistan has steadily improved in the last decade due to the return of a large number of wealthy expats, the modernization of the nation's agriculture sector, and the establishment of more trade routes with neighboring and regional countries. The billions of dollars in international assistance that came from expats and outside investors saw this increase when there was more political reliability after NATO became involved in Afghanistan's reconstruction. The nation's GDP (PPP) stands these days at about $70 billion with an exchange rate of $20 billion (2017), and the GDP per capita (PPP) is about $2,000. It imports over $6 billion worth of goods but exports about $1 billion worth of legal products, mainly fruits and nuts. The natural environment or natural world encompasses all living and non-living things occurring naturally, meaning in this case not artificial. The term is most often applied to the Earth or some parts of Earth. This environment encompasses the interaction of all living species, climate, weather and natural resources that affect human survival and economic activity. The concept of the natural environment can be distinguished as components: Complete ecological units that function as natural systems without massive civilized human intervention, including all vegetation, microorganisms, soil, rocks, atmosphere, and natural phenomena that occur within their boundaries and their nature. Universal natural resources and physical phenomena that lack clear-cut boundaries, such as air, water, and climate, as well as energy, radiation, electric charge, and magnetism, not originating from civilized human actions. Pollution is the introduction of contaminants into the natural environment that cause adverse change. Pollution can take the form of any substance (solid, liquid, or gas) or energy (such as radioactivity, heat, sound, or light). Pollutants, the components of pollution, can be either foreign substances/energies or naturally occurring contaminants. Although environmental pollution can be caused by natural events, the word pollution generally implies that the contaminants have an anthropogenic source – that is, a source created by human activities. Pollution is often classed as point source or nonpoint source pollution. Major forms of pollution include air pollution, light pollution, litter, noise pollution, plastic pollution, soil contamination, radioactive contamination, thermal pollution, visual pollution, and water pollution.