Across
- 4. - street vendors make up this type of economy
- 5. - when the birth rate is higher than death rate
- 9. - number of zones in Rio
- 10. - a rapidly growing megacity
- 12. the proportion of the worlds population who live in cities
- 13. - a new nuclear generator solves this challenge
Down
- 1. - a service industry in Rio
- 2. - the flow of people
- 3. - half the population in this region live in towns and cities
- 6. - country where the largest population growth will be by 2050
- 7. - tourism and manufacturing are examples of this in Rio
- 8. - reason why someone wants to leave an area
- 11. - a reason for water problems