Children usually have all 20 of which "deciduous" body parts by about age 3?

Who was Muhammad Ali's opponent in the "Rumble in the Jungle"? Alisa Berk played the ape mother Kala in which 1984 film, subtitled "The Legend of Tarzan, Lord of the Apes"? Alisan Porter played Curly Sue in 1991. Which child star played Curly Top in 1935? "Alive" and "Jeremy" are songs by which band? All three English kings with which name died violently? All five of Rhode Island's counties border which bay? All six known examples of whose signature date from between 1612 and 1616? Of the six natural noble gases, all found on Earth between 1894 and 1900, which was discovered last?