Why does mantle convection occur?

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.

the part i "agree with' is " it should not matter what color their skin is or what their cultural beliefs are." but for the main part i agree with it all or if cause now and days there are some people don't get the job cause there skin color and there beliefs and some times they don't even get the same repest as white people. we are all equal.