After oxygen and hydrogen, which element is most abundant in ocean water (by mass)?

What is the approximate circumference of the circle shown below? 12.2 cm

How many square miles is the big island of hawaii

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.