In the beginning of human history, the population growth was very slow, with the estimated world population at about 800 million
The slow population growth was attributed to the effect of high morality (death rate)as a result of diseases, plagues, famine, unhygienic living conditions and general poverty
Up to the middle 18th century life expectancy was about 30 yeas
After 1750, the world population grew considerably. By 1950, it tripled to 2,5 billion. The growth from 1950 to 1985 was even more drastic. By 1985 the human population was 5 billion
By the year 2000 the population was 6 billion. At present, the world population stands at 7,08 billion
