Answer:Answer. Worldwide, the most widely used modes for passenger transport are the Automobile (16,000 bn passenger km), followed by Buses (7,000), Air (2,800), Railways (1,900), and Urban Rail (250).
Salt of the earth. The desert regions also gave Egypt a rich supply of salts, particularly natron, brine, and soda. These were used in medicine, to preserve and flavor food, and to tan animal hide
