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.
During 2010, the United States produced 128 million cubic meters of helium. Of that amount, 53 million cubic meters of helium was extracted from natural gas and 75 million cubic meters was withdrawn from the National Helium Reserve.Other countries with known production amounts were: Algeria (18 mcm), Qatar (13 mcm), Russia (6 mcm), and Poland (3 mcm).f that amount, 53 million cubic meters of helium was extracted from natural gas and 75 million cubic meters was withdrawn from the National Helium Reserve. Other countries with known production amounts were: Algeria (18 mcm), Qatar (13 mcm), Russia (6 mcm), and Poland (3 mcm).