Cultural GeographyPopulation |
How long did it take for the world population to double in size? |
From 1959 to 1999, the population went from 3 billion to over 6 billion.
Cultural GeographyPopulation |
How long did it take for the world population to double in size? |
From 1959 to 1999, the population went from 3 billion to over 6 billion.