Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Ruwa: Ruwa da ake samu a ƙasa da kuma sama da duniyar da ake kira hydrosphere. Kimanin adadin ruwa na duniya (cikakken wadataccen ruwa na duniya) shine 1.338 biliyan cubic kilomita (321 × 10 ^ 6 cu mi). Ana samun ruwa mai ruwa a cikin ruwa, kamar teku, teku, tafki, kogi, rafi, canal, tafki, ko puddle. Mafi yawan ruwa a duniya ruwan teku ne. Ruwa yana nan a cikin yanayi a matsayin mai ƙarfi, ruwa, da tururi. Hakanan yana wanzu a matsayin ruwan ƙasa a cikin aquifers.  Tambaya: Mafi yawan ruwan duniya wane irin ruwa ne?
ruwan teku