Question

A population with aqual birth and death rate

Answer 1

In the long term, zero populationgrowth can be achieved when thebirth rate of a population equalsthe death rate, i.e. fertility is at replacement level and birth and death rates are stable, a condition also called demographic equilibrium. Unstable rates can lead to drastic changes in population levels.
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Answer 2

death rate is the number of death per thousand individual in a year