What change was seen in the world's overall population between 1963 and 2011? 

A)  it increased by 100% 
B)  it increased by 25% 
C)  it decreased by 40% 
D)  it decreased by 100%

Population Increase

This describes the growth in the number of individuals within a population, often influenced by factors such as birth rates, death rates, and migration.

Population Decrease

A reduction in the number of people in a population due to factors like death rates exceeding birth rates, emigration, or other causes.

World's Overall Population

The total number of humans currently living on Earth.