The part of the earth’s crust that is covered by oceans and seas is called? by Sunday | Jun 14 | Geography WAEC | 0 comments A. biosphere B. hydrosphere C. ionosphere D. stratosphere Correct Answer: Option B – hydrosphere Users Also Read These:A serious environmental hazard which causes both…Mountains formed as a result of compressional forces…The layer of earth found immediately beneath the…The liquid portion of the earth’s crust is called?A sedimentary rock formed only in seas and oceans in…