📝 Statistics of world population increase since 1900

Q1. What was the average annual population growth rate worldwide between 1850 and 1900?

💡 Difficulty: easy | ✅ Correct: A

Q2. In which year did the global human population first surpass the 7‑billion mark?

💡 Difficulty: medium | ✅ Correct: C

Q3. What is the primary demographic factor that explains why 90 % of the world’s population increase in the 1990s occurred in poorer countries?

💡 Difficulty: hard | ✅ Correct: A