According to the online content article about antarctica and the atacama, why are parts of antarctica considered to be deserts? a. because they are so dry b. because they have few animals or plants c. because they are far from the coast d. because they are so cold

Which of the following was a key accomplishment of the people of songhai? a. they had a strong military and became the largest empire in west africa. b. they established a center of islamic scholarship. c. they worked with iron and prospered from the gold-salt trade. d. they dominated in the trade of ivory, enslaved people, and animal skins.