登入
WAEC - Geography (2011 - No. 4)
The mineral contents of the upper part of the earth's crust are collectively called the sial because it is composed mainly of
silica and olivine
alumina and olivine
silica and alumina
alumina and phosphate
评论 (0)
登录发表评论
广告
允许 javascript 正确加载此页面
