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Introduction- Population through the Ages

Zero populati...

Question

Zero population growth means
(a) no few births
(b) no immigration
(c) loss and gain are equal
(d) no emigration

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Solution

(c) loss and gain are equal
Zero population growth means the loss and gain in population are equal, resulting in no net increase in population.

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Similar questions

When the number of immigration and births is more than emigration and deaths, the growth curve of the population will show

Q. Number of immigration is more than emigration and death is lower than natality. Growth curve of population will show

Q. A country's birth rate is the number of births per year per

1000

people in the country, and a country's death rate is the number of deaths per year per

1000

people. Immigration refers to the number of people who move into a country each year, and emigration refers to the number of people who move out of the country each year. A country's population growth is determined by these four variables. Table

1

gives birth, death, immigration and emigration rates in four countries and lines

1 - 4

1

model in the population for the four countries shown over time.

	Birth	Death	Immigration	Emigration
East Zealand	$20$	$x$	$1000$	$1000$
West Zealand	$21$	$21$	$12100$	$y$
South Zealand	$36$	$24$	$z$	$500$
North Zealand	$13$	$13$	$82000$	$9600$

Name the country whose population is represented by line

1

.

Q. Fill in the blanks
1. ___(i) ___ is the rate at which new individuals are added to a population by reproduction.
2. ___ (ii) ___ is the rate at which individuals are lost by death.
3. ___ (iii)

refers to individuals moving away from each other.
4. ___ (iv)

refers to individuals moving out of a population.
5.

refers to individuals moving into a population.

Q. The population of a town is

50, 000

. If the annual emigration rate is

6 %

and the annual immigration rate is

4 %

, calculate the population after two years.

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