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In this video I'm going to explain you some characteristics of population that

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we need to know if we want to analyze the population of a place. Let's start

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with birth and death rate. Birth rate is the number of babies born in a place in

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one year. Meanwhile, death rate is the number of people who die in a place in

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one year. The difference between the number of people who are born in an area

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In one year and the number of people who die is called natural growth.

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To calculate the natural growth we need to subtract the number of deaths, that is the

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death rate, from the number of births, that is the birth rate.

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Let's explain now migration.

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Migration refers to people who move from one country to another.

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There are two types, emigrants are people who leave their country to live in another

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one. And immigrants are people who come to live in a new country. The difference

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between the number of immigrants and the number of immigrants is called net

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migration. To calculate the net migration of a place we need to subtract the

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number of immigrants from the number of immigrants. But why do you think people

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migrate? Some of the reasons are to find a job, to improve their education, to

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improve life conditions or to run from war and natural disasters in their

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country. Life expectancy is another characteristic of population and refers

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to the number of years that a person is expected to live. According to employment

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we can talk about active population and inactive population. Active population

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includes all adults who are able to work. This can be employed people who work or

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unemployed people who look for a job. Inactive population includes different

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groups for example children, retired people, people who can't work, students or

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people who don't want to work. Finally there is something called population

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density. Population density tells us the number of inhabitants that live in a

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square kilometer. To calculate population density we need to divide the number of

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people in an area by the star facing square kilometers of that area