I believe that the answer Is all of the above.
We should all know that gravity keeps the planets in orbit. Also, electrons can leave an atom if they have enough energy.
I hope this helps!
C. math // the other 3 classes are electives.
Answer:
Change an unwanted behavior.
Explanation:
Unless extraterrestrial humans enter Earth or people leave to inhabit another planet, net global immigration and emigration are both zero. Thus, to reduce the rate of global population change, the number of births must be reduced or the number of deaths must be increased.
