What happens in a global convection cell?
a. cool air moves upward in the center; warm air moves downward at
the edge.
o
b. warm air and cool air move in circles, causing hurricanes and
tornadoes.
o
c. cool air and warm air repeatedly collide, pushing air up and
causing storms.
o
d. warm air moves upward in the center, cool air moves downward at
the edge

the farther away the object is from the central star (the sun) it's gravitainal pull on the object is weaker when it is farther

explanation:

the correct answer is 4) heat and pressure

metamorphic rocks arise from transformation of existing rocks types, in a process called metamorphism. during metamorphism the original rock(prolith) change into metamorphic rock by heating (150-200c) and pressure of more than 1000 bar. the original rock can be sedimentary, igneous, or existing metamorphic rock.