On which day, world population touched 5th billion?
A. May 11, 1985
B. July 11, 1986
C. May 11, 1987
D. July 11, 1987
Answer:D
On which day, world population touched 5th billion?
A. May 11, 1985 B. July 11, 1986 C. May 11, 1987 D. July 11, 1987