Question 8 of 15 How do trade barriers affect the African economy today? O A. They allow Africa to sell goods at a higher profit . OB. They cause Africa to export more goods. C. They result in Africa relying too heavily on subsidies. D. They force Africa to lower the prices on its goods.

Which statement explains what upwelling causes? a. upwelling causes tides to rise and fall. b. upwelling causes changes in the direction of currents. c. upwelling causes nutrients, minerals, and tiny organisms to rise. d. upwelling causes currents in the pacific ocean to change direction. i think the answer is c.

Given: circle a externally tangent to circle b. how many possible common tangents to circles a and b can exist? 2 3 4

What does the kyoto protocol aim to reduce