By volcano activity so I assume your answer would be A
Answer:
The outer core is mostly made out of iron.
Explanation:
Answer:
The answers are A,B, D and E
also
1, 2, 4 and 5
Explanation:
Answer:
As the cloud shrinks in size, its central temperature increases, as a result of its gravitational potential energy being converted to thermal energy.
We are assuming that the mentioned cloud, is a cloud of interstellar dust (nebula), in which this definition is applicable. Since energy cannot disappear, the lost gravitational potential energy would have to transform into something else, in this case, thermal energy, or simply heat, which will increase the overall temperature of the cloud.
Besides the theory of gravity, he developed the laws of motion. He also discovered calculus which helped in the mathematic world. (I know that the calculus thing is not really part of the science. I just wanted to add to that just in case.)