The answer is a) manganese nodules
I believe the best answer to this is "Foreign investment".
The united states is going to see a big population growth compared to japan and other countries because alot of immigration is happening both legally and illegally to the united states and will see a population surge of more than 5 billion population growth within 2 years
Seafloor spreading<span> is a process that occurs at mid-ocean ridges, where new oceanic crust is formed through volcanic activity and then gradually moves away from the ridge. </span>Seafloor spreading<span> helps explain continental drift in the theory of plate tectonics. </span>
