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 degree of saltiness or concentration of salt…The mineral contents of the upper part of the…Th earth's crust consists essentially of?The layer of earth found immediately beneath the…The vessels that operate on specific route on high…