Where do volocanoes occur more

The causes of the failure of the league of nations

What structure on the south african coast has a range of 63 km and releases flashes every 30 seconds?

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.