When minerals are dissolved, how are the resulting ions carried by rivers?

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.

What first caused people to consider that the continents were once one large landmass?

When you start from a given set of rules and conditions and determine what must be true you are using blank reasoning