Explain How Birthrates And Death Rates Influence The Size Of A Population?

Explain how it doesn't O.o of course the births and deaths of people affect the population because it determines how many die and how many are born.

If the birth rates are high but death rates are low, then population's going to grow. If it's the other way around, population's going to decrease. And if both are generally equal, then the population would be stable.