It’s Greek ;) Apo- is not very common, but you can spot it in “apocalypse”, meaning to uncover, to reveal (away + cover), for example. -logos (words) you have seen many times in all the -logy words, used to mean “study of…”

Sorry, my initial message sounded way too harsh but I think etymology is a super easy subject to teach kids and really helps when encountering new words and I think it’s a crying shame it’s not more popular, especially in English where you have so many foreign words!