To get a sense of exactly how long an uncoiled DNA molecule is compared to a typical cell, a cell is magnified 1000 times. At this scale, the total length of all the DNA in the cell's nucleus would be 3 km -- the equivalent distance of the Lincoln Memorial to the capital in Washington, DC.
Cairo Climate & Temperature. 1  Cairo, Egypt is at 306'N, 3124'E, 75 m (244 ft). 2  Cairo has a subtropical desert / low-latitude arid hot climate (Kppen-Geiger classification: BWh)  According to the Holdridge life zones system of bioclimatic classification Cairo is situated in or near the subtropical desert biome.
Many international media, businesses, and organizations have regional headquarters in the city; the Arab League has had its headquarters in Cairo for most of its existence. With a population of 6.76 million spread over 453 square kilometers (175 sq mi), Cairo is by far the largest city in Egypt. An additional 10 million inhabitants live in close proximity to the city. Cairo, like many other mega-cities, suffers from high levels of pollution and traffic.