Zero growth means :

Options

A. Natality balances mortality
B. Natality is more than mortality
C. Natality is less than mortality
D. Natality is zero

Answer

To solve the question "Zero growth means:", we need to analyze the options provided and understand the concept of zero population growth.

### Step-by-Step Solution:

1. **Understanding Zero Growth**:
- Zero growth in a population refers to a situation where the population size remains constant over time. This occurs when the number of births (natality) is equal to the number of deaths (mortality).

2. **Analyzing the Options**:
- **Option 1: Natality balances mortality**:
- This means that the birth rate is equal to the death rate. This is the definition of zero growth, as there is no net increase or decrease in the population.
- **Option 2: Natality is more than mortality**:
- If the birth rate is higher than the death rate, the population will increase, which does not indicate zero growth.
- **Option 3: Natality is less than mortality**:
- If the birth rate is lower than the death rate, the population will decrease, which also does not indicate zero growth.
- **Option 4: Natality is zero**:
- If there are no births at all, the population would decline unless there are no deaths either. This does not define zero growth.

3. **Conclusion**:
- The only option that accurately describes zero growth is **Option 1: Natality balances mortality**. This indicates that the population remains stable with no net change.

### Final Answer:
Zero growth means: **Natality balances mortality**.

---