Answer:
b,d
Explanation:
An ion is an atom with a difference in the amount of protons and elektrons.
A decrease in the overall volume of gases namely hydrogen would prevent nuclear fusion in a nebula.
The solid water begins to change into liquid water when the ice molecules<span> start to move around. Another way to say that a substance changes from the solid state to the liquid state is to say it </span>melts<span>. Te </span>ice<span> continues to </span>melt<span> as more </span>ice molecules<span> get enough energy to move around.</span>
The ball travels 10m/s
Speed = distance/time
