Answer:
Examples of Primary Succession:Volcanic eruptions,Retreat of glaciers,Flooding accompanied by severe soil erosion,Landslides,Nuclear explosions and Oil spills.
Cultural imperalism is the answer
Explanation:
Convection occurs in the Earth's mantle because it is the most efficient way for the Earth to cool or dispose of its deep-seated heat content. In general, heat can be transferred by conduction, radiation or convection.
