Answer:
it is plate tectonics option D hope it helps
there are 7 major and 20 minor plates
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Answer:
imma be honest I dint really know
B. The gravity acceleration is in the same direction as the force of gravity, and thus towards the centre of the earth
Solar Nebula
Our solar system began forming within a concentration of interstellar dust and hydrogen gas called a molecular cloud. The cloud contracted under its own gravity and our proto-Sun formed in the hot dense center. The remainder of the cloud formed a swirling disk called of the solar nebula.
