Answer:
A
Explanation:
Water pollution is a concern because of the lack of waste treatment options. Sewage and industrial waste have been dumped into water sources. Also of concern is the limited supply of freshwater. With Dubai's large population, desalination processes have become necessary to provide people with drinking water.
Is based on supply and demand. With little or no government control. Buyers and sellers are allowed to transact freely if on mutual price agreement without state interfering in the form of taxes, subsidies or regulation.
In general, most states with silver deposits have mountainous regions that are important to the development of these deposits over time, but this is not always the case. <span />