WHAT ARE RADIOISOTOPES ? Many of the chemical elements have a number of isotopes. The isotopes of an element have the same number of protons in their atoms (atomic number) but different masses due to different numbers of neutrons. In an atom in the neutral state, the number of external electrons also equals the atomic number.
Ciudad Perdida Archaelological Park (Colombia.travel), also known as Teyuna, is on the Buritaca River in the Sierra Nevada de Santa Marta mountain range. Ciudad Perdida, which means lost city, is not easy to get to but visitors can enjoy the beauty of exotic forests, waterfalls and hanging bridges on the way.ierradentro Archaeological Park. Tierradentro Archaeological Park (colombia.travel) is in a mountainous region in southwest Colombia's Department of Cauca. A popular archaeological site, Tierradentro includes stone statues and underground tombs that reach 29 feet deep.
BogotÃ¡, Colombia is at 4Â°42'N, 74Â°9'W, 2546 m (8353 ft). See map. BogotÃ¡ has a marine west coast climate that is mild with no dry season, warm summers. Heavy precipitation occurs during mild winters which are dominated by mid-latitude cyclones. Seasonality is moderate (KÃ¶ppen-Geiger classification: Cfb).