Answer:
picture is upside down btw
A planet in motion remains in a stable orbit around the sun mainly because of two things: the nature of the gravitational force and because virtually no other forces act on the planet. The momentum of a planet changes during its orbit but not, in general, its inertia -- which relates solely to its mass.
There's iron and nickel (called alloy) gold, platinum, and uranium.
Running water is the leading cause of soil erosion, because water is abundant and has a lot of power. Wind is also a leading cause of soil erosion because wind can pick up soil and blow it far away.
