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 density of the earth's crust varies from?The proportion of the earth's surface occupied by…Which of the following landforms may occur when…The earth is four times the size of the moon and the…