What is the south american guarani aquifer system?
a 'no take' zone

a marine ecosystem

a supply of groundwater

the world's largest rain forest

How does the slope of the land affects the speed of lava flow

What is the mercury length of time for one revolution around the sun?

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.