Question

When the birth rate is equal to each woman producing exactly enough offspring to replace herself and her offspring's father, and the birth rate is sustained for a generation, then ________.

Answer 1

Then the net population growth is zero.

Explanation:

When the birth rate is equal to each woman producing exactly enough offspring to replace herself and her offspring's father, and the birth rate is sustained for a generation, then there will be no increase in population so the net population growth will be zero.

Population of species is defined as the number of individuals of a given species.

For example, if their were 50 individuals in a population and a woman out of them mates with a man and produces one offspring to replace her and one offspring to replace her offspring's father, and then both of them die.

So the intrinsic rate of population growth = No. of birth -no. of death

                                                                     $=2-2$

                                                                     $= 0$

                                  Growth rate $= \frac{dN}{dN} = rN$

                                                        $=0$

                                                   

Answer 2

When birth rate is enough to replace its parents and sustain for the generations, the growth will be zero.

Population

The population can be defined as the number of individuals in a given species.

• If a birth rate is enough to replace its parents and sustain for the generations, the growth will be zero.

• For example - In a population, number of births  is equals to the death is 100.

Population growth = Number of birth - number of death    

$\bold {Population Growth = 100 - 100 }\\\\\bold {Population Growth = 0}$

Therefore, when birth rate is enough to replace its parents and sustain for the generations, the growth will be zero.

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