Answer: a vector
Explanation:
A Vector is a physical quantiy that has can magnitude and direction. Examples of vectors are Velocity, acceleration, force, momentum etc
Now, since velocity is defined as the displacement experienced by an object in a specified direction, it is therefore correct to call velocity a vector
Scientists have tried lots of different ways of predicting earthquakes, but none have been successful. They have a pretty good idea of where an earthquake is most likely to hit, but they still can't tell exactly when it will happen.
On the planet earth. They exist in what we call the "world", which holds all seen life.
The answer is B . two atoms exchange electrons and become ions
