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 earth is four times the size of the moon and the…The degree of saltiness or concentration of salt…The vessels that operate on specific route on high…Th earth's crust consists essentially of?The density of the earth's crust varies from?