Aridge of land that separates two watersheds is called a?

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.

Select the natural regions. delta denver forest georgia north america plateau stream

Which soil layers comprise the topsoil? o horizon a horizon b horizon c horizon