Authors: Hans Rosling
C: 2 billion
6. The UN predicts that by 2100 the world population will have increased by another 4 billion people. What is the main reason?
A: There will be more children (age below 15)
B: There will be more adults (age 15 to 74)
C: There will be more very old people (age 75 and older)
7. How did the number of deaths per year from natural disasters change over the last hundred years?
A: More than doubled
B: Remained about the same
C: Decreased to less than half
8. There are roughly 7 billion people in the world today. Which map shows best where they live? (Each figure represents 1 billion people.)
9. How many of the world’s 1-year-old children today have been vaccinated against some disease?
A: 20 percent
B: 50 percent
C: 80 percent
10. Worldwide, 30-year-old men have spent 10 years in school, on average. How many years have women of the same age spent in school?
A: 9 years
B: 6 years
C: 3 years