Butterfly (1957 song) Butterfly is a popular song written by Bernie Lowe and Kal Mann and published in 1957. The song is credited to Anthony September as songwriter in some sources. This was a pseudonym of Anthony Mammarella, producer of American Bandstand.
Active Trading. DEFINITION of 'Active Trading'. The buying and selling of securities with the intention of holding the securities for a short duration, typically for no more than one day.
Active transport. Definition. noun. A kind of transport wherein ions or molecules move against a concentration gradient, which means movement in the direction opposite that of diffusion â or â movement from an area of lower concentration to an area of higher concentration.he movement of a substance across a membrane from a region of its lower concentration to a region of its higher concentration against a concentration gradient, using energy. This energy is supplied through respiration using ATP. Mitochondria (cell organelles in the cytoplasm) control energy release.