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Gapminder Test

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7. The United Nations predicts that by 2100 the world population will have increased by another 4 billion people. What is the main reason?
There will be more very old people (above age 75).
There will be more adults (15-75).
8. In low income countries across the world, how many girls complete fifth grade?
20%
60%
4. Where does the majority of the world population live?
High income countries
Middle income countries