How to measure the amount of rainfall in a place with rain guage

How much water is in the ocean in cubic kilometers

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 a formal factor that connects egypt to africa to europe and to southwest asia