useless trivia: ---------- is used as a center for golf balls and in antifreeze mixtures.?

Questions

the prefix tetra, used in such words as tetrach, tetrapod, & tetrameter, means what?

the straits of malacca separate malaysia from which country?

this statue was found on the greek island of melos in 1820?

to which planet does the moon iapetus belong?

under which rules was boxing standardised?