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, gotta get down on Pi Day. Saturday marks Pi Day, the one day each year the calendar's digits match up with pi or Ï, the irrational number that expresses the ratio of a circleâs circumference to its diameter. In other words, March 14 (or 3/14) matches 3.14, the shortened number for pi. The date is particularly exciting this time around, as the digits in the year (2015) line up with the next two digits of pi, 15..