Help I’m stuck witch of the following statements about earths inner core is true A. it’s mostly made of iron

B. it’s mostly made of dirt

C. it’s mostly made of volcanos

D. it’s mostly made of oxygen

Read the article titled "trans-saharan migration routes to north africa and the eu: historical roots and current trends." why do tens of thousands of sub-saharan africans try to cross the mediterranean each year? how are these refugees commonly portrayed? (site 1)