Question

Zero growth means:
A) Natality balances mortality
B) Natality is more than mortality
C) Natality is less than mortality
D) Natality is zero

Answer 1

Hint: Zero Population growth is a condition in which the population always remains stable. The population is neither growing nor declining as the number of births and deaths are found to be equal.

Complete Answer:
- Natality is the birth rate, the rate of production of new individuals per unit of population per unit time through different processes of birth like hatching, germination or vegetative propagation. Natality (birth rate) can be calculated as a number of births in a year per thousand individuals.
- Mortality rate is the death rate, i.e. total number of deaths in a year per unit of population per unit time. It can be expressed in units of deaths per 1,000 per year or it could be described as percent dead in a specific period of time.
- Zero growth rate means that natality (i.e. birth rate) is successfully balancing mortality (i.e. death rate).

Thus, the correct answer is option (A) Natality balances mortality.

Note: Zero population growth is a condition where the number of people in a population remains unchanged. It means that the population either grows or declines. This kind of demographic balance is achieved when the growth and death rate are equal. Zero population growth is also called the replacement level of fertility.