Which is an example of secondary succession?

Which country's action would be in violation of section ii of the agenda 21 plan

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.

Which of these has the least impact on the climate of a place