How do birth affect population size?

The more births a society has, the more people it has.

For further reading:

http://en.wikipedia.org/wiki/Population_growth

The size of a population is directly influenced by the number of births in a society. When more births occur, the population increases. This can be seen in societies where the birth rate consistently exceeds the death rate, resulting in population growth over time.

To determine the specific impact of births on population size, you can use the following formula:

Population Size (at a particular time) = Initial Population Size + Number of Births - Number of Deaths + Number of Immigrants - Number of Emigrants

This formula takes into account not only births but also other factors such as deaths, immigration, and emigration. By calculating the net change in population over a given period, you can determine how births contribute to population growth in a particular society.

For more in-depth information on population growth and its various factors, you can refer to the provided link to the Wikipedia article on population growth.