When plates move away from each other it can cause rift valleys to form.
<span>Life expectancy in Sub-Saharan Africa is lower than that of more-developed nations.
Poverty is prevalent in Sub-Saharan Africa. </span>It is also<span> is the region with the highest prevalence (percentage of population) of </span>hunger<span>. When a person is malnourished as well as undernourished, he or she has lower immunity and is more prone to have diseases. </span>
When two oceanic plates converge, the denser plate will end up sinking below the less dense plate, leading to the formation of an oceanic subduction zone. Old, dense crust tends to be subduction back into the earth.
