Biology
Grade-9
Easy
Question
________ is calculated by dividing the total number of births by the total population in a given period of time.
- Mortality
- Natality
- Birth rate
- Both b and c
Hint:
Both b and c
The correct answer is: Both b and c
- Natality or birth rate is calculated by dividing the total number of births by the total population in a given period of time.
- It is expressed by 1000 population per year.
- It is one of the factors for estimating census.
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