It is when two or more different substances which are mixed
Answer:
Basically an object in motion or at rest will remain that way unless an outside force acts against it.
Explanation:
Newton's first law states that every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force. This is normally taken as the definition of inertia.
A. The fact that it's less dense than cold air.
On a molecular level there is a lot of movement which in turn is the reason why heat is generated.
Igneous and <span>granite are the rocks.</span>
