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:The layer of earth found immediately beneath the…Which of the following landforms may occur when…The earth is four times the size of the moon and the…The vessels that operate on specific route on high…The degree of saltiness or concentration of salt…