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How many people are in the world?
The world population
At the beginning of our era, 2020 ago years, it has been estimated that humanity reached approximately 250 million, that is, a quarter of a billion people.
The first billion reached it in the 1800s. The second 127 years later, and then every billion additional was presented in more time periods and shorter. The third in 1960, the fourth in 1974, the fifth in 1987, the sixth in 1999 and the seventh in 2011.
According to calculations of United
Nations, in mid-2015 the
population of the world was 7.35
billion, that is 7.350 million people.
Ecuadorian population
in 1950 Ecuadorians were not more than 3.5 million and that in 1972 they reached 6.4 million. Now the Ecuadorian population is just 1.16% of the Chinese population and 0.22% of the population world.
Between 1800 and today the population of Ecuador passed from half a million inhabitants to 16
million, that is, in 215 years it has multiplied at least 30 times.
Demographic transition
from the 18th century, and during the following centuries, the mortality rate was lowered. More people were born than they died. Because living conditions were improved.
This phenomenon called "demographic transition", began in Europe. Then it spread to the other continents. Thus, between 1800 and today the world population has multiplied by seven sometimes approximately.
before the 18th century, population growth in all parts of the world. It was always very slow because high birth ratesthat were invalidated because high mortality rates.
Birth and mortality
The average number of people born in a specific place and time, and who increase mint the
existing population, is called birth.
The number of people, who die in a specific place and time,
and the existing population decreases, is called mortality.
Population transformations can be explained in large part by two factors that are considered very
important: birth levels and mortality levels.
Continents’ population
The most populous country in the world is currently China, which has more inhabitants (1,400
million) that the entire American continent or that the entire African.
United Nations projections, in the year 2100 the most populous country in the world would be India (1.660 million), followed by China (1,000 million), Nigeria (752 million), the United States (450 million) and the Democratic Republic of the Congo (389 million).
At the beginning of the Christian era, two thousand years ago, the proportion of the populations continued such would have been similar. Asia and Europe, the "old" continents have lost in percentage. And they have gained percentages today: Africa, America and Oceania.
Population disproportions
If the relationship between rich and poor countries of the world is considered, in general terms
it could be established that all developed countries are now populated by 1.3 billion inhabitants.
the disproportion is inverse. Rich or developed countries (which are few) they concentrate the consumption of 73% of energy and accumulate 97% of the world's wealth.
North America is the most urbanized continent (81%). Africa and Asia are the least urbanized (41%). The other continents have a greater urban population: Latin America (78%); Europe (74%) and Oceania (73%).
