A change in the core would have the greatest effect on the convection currents in the mantle. Hope this helped!
The Sun's increase in activity.
Oxidation - the breakdown of rock by oxygen and water, often giving iron-rich rocks a rusty-coloured weathered surface.
Answer:
Where the pacific and Atlantic oceans each meets land.
Explanation:
A margin or boundary is the edge of a plate. in this case, a continental margin is the edge of the continent, where it meets with the oceanic plate.
