Across
- 5. number of children per woman
- 7. all co2 Exchange om earth
- 9. celestial body that orbits around a sun
- 10. amount of people dying per 1000 people
- 12. rate number of births per 1,000 people
- 13. liquid changes into gas
- 15. life on earth
- 16. world is connected
- 19. steep increase in population
- 21. farming
- 23. air around us
Down
- 1. underground water-bearing layer
- 2. more people dying than being born
- 3. amount of water going trough a river
- 4. all water on earth
- 6. food shortage and ricing prices
- 8. discussion between people
- 11. earths crust
- 14. birth control
- 15. fuel made of biomass
- 17. when water vapour cools and form water droplets
- 18. study of population
- 20. surplus more births than deaths per year
- 22. force of attraction to earth