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 + . . . . . . . . . . .
Pi Day. Pi Day is an annual celebration of the mathematical constant Ï (pi). Pi Day is observed on March 14 (3/14 in the month/day date format) since 3, 1, and 4 are the first three significant digits of Ï. In 2009, the United States House of Representatives supported the designation of Pi Day.