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What are the three components of population change? - Geography

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प्रश्न

What are the three components of population change?

टिप्पणी लिखिए

उत्तर

  • Crude Birth Rate (CBR): It is expressed as number of live births in a year per thousand of population in a particular region.
  • Crude Death Rate (CDR): It is the number of deaths in a place per thousand of population in a particular region. CBR and CDR are natural factors of population growth. They result in natural population growth, which is equal to the difference between CBR and CDR.
  • Migration: It is the induced factor in population growth. It is the number of people moving in and out of a place due to various social, economic and political reasons. It is taken into account while calculating actual growth of population.
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अध्याय 2: The World Population - Distribution, Density and Growth - Exercises [पृष्ठ १५]

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एनसीईआरटी Fundamentals of Human Geography [English] Class 12
अध्याय 2 The World Population - Distribution, Density and Growth
Exercises | Q 2. (iii) | पृष्ठ १५

संबंधित प्रश्न

If the birth rate is greater than the death rate then the population ______.


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Identify the correct correlation :

A: Assertion; R: Reasoning

A: In stage 2, the death rate reduces but the birth rate is constant.

R: The population increases rapidly in stage 2.


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Reason: Birth rate, death rate and migration affect the population of a region.


Differentiate between

Crude Birth Rate and Crude Death Rate


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Birth rate and death rate.


Push factors and pull factors of migration.


How long did the world take to increase its population from 5 billion to 6 billion?


What are the components of population change?


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What is the trend in growth of population over the years in the world?


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Which of the following is not a pull factor?


How many times the world population has increased during the last 500 years?


What is the present growth rate of population in the world?


The ten most populated countries have a ______ world population.


Which are the components of population change?


Which of these statements is not true?


Which of the following attributes has not been adversely affected by Age and Skill selective migration?


Which is not in stage III?


When the birth rate is more than the death rate between two points of time, it is known as ______ 


On the basis of the demographic data of a country given below, construct an age pyramid and explain whether the population is stable, declining or growing.

Age group No. of individuals
Pre-reproductive 20,000
Reproductive 15,000
Post-reproductive 10,000

Exponential growth in plants win be expressed as ______.


Crude Death Rate (CDR):-


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Which of the following forms the component of a nation?


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Comment on the growth curve given below.


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When will be the growth of population positive in any place and in which one of the following conditions?


"Migration may be interpreted as a spontaneous effort to achieve a better balance between population and resources." Examine the statement in context of pull and push factors that influence migration.


Examine the different aspects of the growth of population in India during 1951-1981 and 1981-2021.


Consider the following and choose the correct answer with the help of given codes-

STAGES OF POPULATION GROWTH FEATURES
I Period between 1901 to 1921 1. Period of steady growth
II Period between 1921 to 1951 2. Phase of stagnant growth of Population
III Period between 1951 to 1981 3. High but decreasing growth rate
IV After 1981 till present 4. Period of population explosion

Assertion (A): The population of a region does not change.

Reasoning (R): Birth rate, death rate and migration affect the population of a region.


A: Population of a region does not change.

R: Birth rate, death rate and migration affect the population of a region.


Assertion (A): Population of a region does not change.

Reason (R): Birth rate, death rate and migration affect the population of a region.


A : Population of a region does not change.

R : Birth rate, death rate and migration affect the population of a region.


A: The population of a region does not change.

R: Birth rate, death rate and migration affect the population of a region.


Assertion (A): Population of a region does not change.

Reasoning (R): Birth rate, death rate and migration affect the population of a region.


Assertion (A): Population of a region does not change.

Reasoning (R): Birth rate, death rate and migration affect the population of a region.


Assertion: Population of a region does not change.

Reason: Birth rate, death rate and migration affect the population of a region.


Assertion: Population of a region does not change.

Reason: Birth rate, death rate and migration affect the population of a region.


Study the two figures shown below that represent two growth models.

Figure A Figure B
  1. Which one of the two figures represents an unlimited supply of nutrients? Give a reason.
  2. Which figure depicts a challenge to population growth?
  3. Explain the term reproductive fitness.
  4. Give the mathematical expressions for Figure A and Figure B.

Assertion (A): Population of a region does not change.

Reasoning (R): Birth rate, death rate and migration affect the population of a region.


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