What does Gini coefficient of 0.2 mean

Why don't all places on earth receive the same amount of direct sunlight at the same place?

How long does it take neptune to orbit the sun?

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.