The excess of births over deaths in a year per 1,000 individuals is called growth rate.

Answer

To determine whether the statement "The excess of births over deaths in a year per 1,000 individuals is called growth rate" is true or false, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Terms**:
- Define "births" as the number of live births in a population over a specific period (usually a year).
- Define "deaths" as the number of individuals who die in that same period.

2. **Calculate Excess of Births over Deaths**:
- The excess of births over deaths can be calculated by subtracting the number of deaths from the number of births.
- Formula: Excess = Births - Deaths

3. **Relate to Population**:
- The statement mentions this excess is measured per 1,000 individuals in the population.
- This means we need to express this excess in terms of a rate that is standardized to a population size of 1,000.

4. **Understanding Growth Rate**:
- Growth rate is typically expressed as a percentage or as a per-thousand figure.
- The growth rate can be calculated using the formula:
\[ \text{Growth Rate} = \left( \frac{\text{Excess}}{\text{Total Population}} \right) \times 1000 \]
- Here, the "Excess" refers to the net increase in population due to births exceeding deaths.

5. **Conclusion**:
- Since the statement accurately describes the relationship between births, deaths, and the growth rate, we conclude that the statement is true.

### Final Answer:
The statement "The excess of births over deaths in a year per 1,000 individuals is called growth rate" is **True**.

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