Date post: | 11-Jul-2015 |
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Human ResourcePeople are a nation’s ultimate resource
Its people who makes natural things into useful resources
Thus it can be summarized that when people use their intelligence, naturally available things turn into useful resources. So HUMAN BEINGS are also resources.
Healthy, educated and motivated people develop resources as per their requirements.
Human resource is not distributed equally all over the world.
Humans vary in their age, educational levels and sex.
The way in which people are spread across the globe is known as the PATTERN OF
POPULATION DISTRIBUTION.
More than 90% of the world’s population lives in about 10% of the land surface.
The distribution of population is uneven on the globe.
The crowded areas of the globe are,
South and Southeast AsiaEurope
Northeastern North America
Population is less in,
High latitude areas
Deserts
High mountains
Equatorial forests
Population is more in Northern Hemisphere than in Southern
Almost 3/4 of the world population lives in only 2 continents.
ASIA and AFRICA
World’s most populous countries are:
China
India
USA
Indonesia
Brazil
Pakistan
Bangladesh
Russia
Nigeria
Japan
Density of Population
Population density is the number of people living in a unit area of the Earth’s surface.
Average density of population in India is 324 persons per Square Km
Density of population in Karnataka is 275.6 persons per Square Km
Factors affecting Distribution of population
Topography
Climate
Soil
Water
Minerals
Factors affecting Distribution of population
Social
Areas of better housing, education and health facilities are densely populated.
Cultural
Places with religious and cultural significance attract people.
VaranasiJerusalem
Economic
Industrial areas provide the people with employment opportunities
Osaka, Japan
Population ChangePopulation change refers to the change in number of people during a specific time.
Population change takes place as a result of births and deaths.
Until the 1800s, the population of the world
grew steadily but slowly.
Large no. of babies were born, but they died early because of poor health services
So, the population increase was very less.
In 1820, the world’s population reached 1 billion
After a hundred and fifty years later, in 1970s, it touched 3 billion
This sudden increase in population in a short span of time is called POPULATION EXPLOSION
After less than 30 years, in 1999, it touched 6 billion
This kind of sudden increase in population was a result of better food supplies and medicine all over the world and reduce in infant mortality rates.
The natural causes of population change are BIRTHS and DEATHS.
The difference between birth rate and death rate is called NATURAL GROWTH OF POPULATION
Birth Rate
The number of live births per 1000 people is called BIRTH RATE
Death Rate
The number of deaths per 1000 people is called DEATH RATE