Answer:
C. A change has occurred in the nucleus.
Explanation:
The answer is D. Small object made of ice and dust that orbits the Sun and forms a coma as it approaches the Sun.
Answer:
I think the awnser is B (but don't qoute me on that) if its right then yay but if its wrong im sorry
Explanation:
Velocity means [ (speed) and (direction) ].
If you're traveling around a curve, then your direction is
always changing. So your velocity is always changing,
even if your speed isn't.