Question

Please summarize this into 1 sentence.

Answer 1

It is almost certain that nearly all future population growth will occur in the developing
regions of the world. Urban areas in these regions will absorb most of the additional
people. Population is growing fastest among the poorest population groups within
developing countries. In these countries, a "youth bulge" ensures that the absolute
number of births will rise even as couples are having fewer children.
At the other extreme, most countries in Europe now have a "youth dearth" after
decades of low fertility. Stagnant growth or even population decline is challenging
more countries as fewer workers must support expanding pension and social security
systems for their aging citizens.

Answer 2

please help!