Why is rock cycle known as a cyclic process ?

What factors led to europe's global dominance in economic and political factors? what impacts did that dominance have on other peoples and environments?

What weather system might be occurring if the pressure gradient decreases and fish harvests in peru are weaker than normal

Which movement developed in the early 1900s and encouraged the nationalist spirit of africans throughout the world? a. african nationalist b. tribalism c. pan-africanism d. african union