Which structure is the command center for the cell?

What is drought? what problem can cause?

Does the threat of global warming require international cooperation? why or why not?

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.