Natality is balanced by mortality. There will be :

Options

A. Decrease in population growth
B. Zero population growth
C. Increase in population growth
D. Overpopulation

Answer

To solve the question "Natality is balanced by mortality. There will be:", we need to analyze the relationship between natality (birth rate) and mortality (death rate) in a population.

### Step-by-Step Solution:

1. **Understanding Natality and Mortality**:
- Natality refers to the number of births in a population over a specific period, which contributes to population growth.
- Mortality refers to the number of deaths in a population over the same period, which contributes to population decline.

2. **Equilibrium Condition**:
- When it is stated that natality is balanced by mortality, it means that the birth rate is equal to the death rate. This creates a state of equilibrium in the population dynamics.

3. **Implications of Balance**:
- If the birth rate equals the death rate, the number of individuals being added to the population through births is offset by the number of individuals being removed through deaths.
- Therefore, the overall population size remains stable over time.

4. **Conclusion on Population Growth**:
- Since the birth rate and death rate are equal, there will be no net increase or decrease in the population size. This condition is referred to as "zero population growth."

5. **Final Answer**:
- The correct answer to the question is: **zero population growth**.