Distrito Federal had a total population of 8,605,239 in 2000; of the total, 4,110,485 (48%) were men and 4,494,754 (52%) were women. The population density was 5,799 people per square kilometer (15,019 people per square mile). The Distrito Federal is the most densely populated region of the country.
Confidence votes 5.0K. Helium can be found in underground deposits in the earth. Helium can also be found in stars and other planets. +++. The helium underground-and extracted from natural-gas-is a by-product of the natural radioactive decay of uranium, though is far too stable to be radioactive itself. It also occurs in very small amounts in the atmosphere.
Helium is pronounced as HEE-lee-em. History and Uses: Helium, the second most abundant element in the universe, was discovered on the sun before it was found on the earth. Pierre-Jules-Cesar CÃ©sar, janssen A french, astronomer noticed a yellow line in the'sun s spectrum while studying a total solar eclipse in. 1868