Interrelationship between living beings and environment

Name 5 inland waterways of australia

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.

Find the coordinates of a if b(-9,-10) is the midpoint of ac and c has the coordinates of (-1,9)