The global human population has since 1900, with the greatest population changes taking place in . Regions like Asia, Africa, and Latin America have seen of percent since the start of the twentieth century.

Grown, developing world, population growth, 400-700

Explanation: Puting the answers in the sentence becomes :

The global human population has grown rapidly since 1900, with the greatest population changes taking place in the developing world. Regions like Asia, Africa, and Latin America have seen population growth of 400 to 700 percent since the start of the twentieth century.

Population has exploded with Asia contributing the highest share of human population and Europe, the least since the 1900s also with an increase in life expectancy. The bridge between wealthy and poor, overfed and undernourished, have widening as the years have rolled.

the first question's answer is a.