The world population increased from 1 billion in 1800 to 7.7 billion today, and is expected to reach 9 billion by 2050. The world population growth
rate declined from 2.2% per year 50 years ago to 1.05% per year. Which
of the following best reflects this data? *
negative population growth
high life expectancy
high infant mortality rate
fast population growth
slow population growth