it is also the lightest element isotopes are atoms of the same element with different numbers of neutrons in ancient times the elements referred to fire earth water and air helium is the second most common element in the universe but is very rare on the earth
Featherweight is a weight class in the combat sports of boxing, kickboxing, mixed martial arts and Greco-Roman wrestling.
Conor Anthony McGregor (born 14 July 1988) is an Irish professional mixed martial artist who is currently signed to the Ultimate Fighting Championship (UFC). He is the current UFC Featherweight Champion. During his career, McGregor has competed as a featherweight, lightweight and welterweight. In 2008, McGregor started his mixed martial arts (MMA) career and, in 2012, he won both the Cage Warriors Featherweight and Lightweight Championships, holding both titles concurrently before vacating them to sign with the UFC.