is the process by which the. chemical energy. of food molecules is released and partially captured in the form of ATP. Cellular respiration is the general term which describes all metabolic reactions involved in the formation of usable energy from the breakdown of nutrients.
More pi history: European mathematicians in the early modern period developed new arithmetical formulae to approximate the value of pi, such as that of James Gregory (1638-1675), which was taken up by Leibniz: /4 = 1 - 1/3 + 1/5 - 1/7 + . . . . . . . . . . .
The digits of Ï have also been incorporated into the lyrics of the song Pi from the album Aerial by Kate Bush. In the United States, Pi Day falls on 14 March (written 3/14 in the US style), and is popular among students.