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:Which of the following landforms may occur when…The degree of saltiness or concentration of salt…The layer of earth found immediately beneath the…A serious environmental hazard which causes both…A sedimentary rock formed only in seas and oceans in…