Detailed Instructions: In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.
Q: Over 90% of its volume lacks oxygen, because the upper and lower layers do not intermix, making it the largest meromictic basin in the world. It is divided into two sub-basins, the northern one with a large shelf of over 190 kilometers wide. The southern shelf is narrow and borders upon the cities of Samsun and Sinop, to the west emptying through the Sea of (*) Marmara. It is separated from the Sea of Azov by the Cimmerian Bosporus, and northern cities include Odessa and Rostov. FTP, name this inland sea separating Asia from Europe.
A:
Social Science