Most African countries are now at stage 4 of the demographic transition model.

A pessimistic view of population growth suggests that
the global population will reach 8.5 billion by 2050.

Nigeria has a rapidly growing population at this time.

India will have the largest population in the world in the coming decades.

The population of the world increased by 78 million people in 2017.

Sub-Saharan Africa is part of the Sahara.

China has the largest population in the world at this time.

The population of Russia is increasing.

The population of Japan is increasing.