Help me please I don’t know what to put

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)

Why is immigration so important today?

Which types of seismic waves travel through earths interior? select all that apply. a) l waves b) p waves c) s waves