How does the life of a high mass star differ from the sun's life?

Agricultural practices in the united states nearly led to the extinction of the peregrine falcon during the 1950s and 60s.

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)

The process by which liquid water changes into water vapour is called what ?