11. The main way in which new individuals join a population. being born dying ) immigration emigration

## Step 1<br />The question is asking about the primary method by which new individuals join a population. The options provided are: being born, dying, immigration, and emigration.<br /><br />## Step 2<br />Being born is a method of population increase, but it is not the main way. This is because being born is a natural process that happens within a population, but it does not involve the movement of individuals from one population to another.<br /><br />## Step 3<br />Dying is not a method of population increase. In fact, it is a method of population decrease.<br /><br />## Step 4<br />Emigration is a method of population decrease. This is because emigration involves individuals leaving a population to live elsewhere, which reduces the population size.<br /><br />## Step 5<br />Immigration is the main way in which new individuals join a population. This is because immigration involves individuals moving into a population from another location, which increases the population size.