An Unequal World

4. A well-developed nation where most people have a good standard of living
8. Water that is safe to drink and use without causing illness
9. A nation where most people have very little money and the economy relies mainly on farming
10. A nation with low poverty, good infrastructure, and high education levels
14. The process of improving people's lives through positive changes in various areas
15. The age that divides a population into two equal groups (half older, half younger)
16. The average number of children born to a woman in her lifetime
17. Long-term changes in temperature and weather patterns
18. Areas in cities or towns, usually with higher population density
19. Public support for or recommendation of a particular cause or policy
20. A disease that spreads over a whole country or the world

1. Living on less than $1.90 per day
2. Basic physical structures needed for a society to operate (e.g., roads, bridges, water supply)
3. A nation that is growing quickly, often through industry, but isn't fully developed yet
5. Areas in the countryside, often with lower population density
6. An income level below which people are considered poor
7. A nation with high poverty, limited infrastructure, and low education levels
11. Unfair differences between groups of people in society
12. Systems for keeping places clean and healthy, especially by removing human waste
13. How money and resources are shared among people