Where is the Darien Gap located? Should a highway be built through the Darian Gap? Why or why not?

Which of the following about topsoil is fake?

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.

Equilateral triangle pbj is inscribed in a circle as shown. determine the measure of arc pjb.