Many scientists believe that convection currents in the mantle between South American Africa caused the separation between two continents and the formation of the mid Atlantic Ridge which diagram best represents the currents described in their theory?

equal distribution i think.

it's c. (to reduce the greenhouse effect/carbon gasses)

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.