Across
- 3. a liquid very important to make life possible.
- 7. when nobody live in an area.
- 9. it is the most populated country in the world.
- 10. this rate is very high on poor countries.
- 12. the second most populated country in the world.
- 13. New York and many Northamerican cities are located on this coast.
Down
- 1. it is the smallest continent in the world.
- 2. it is very abundant in tropical areas, so it is difficult to live there.
- 4. flat places with fertile soils and good agriculture.
- 5. this mineral is very used today as an energy source for all sort of vehicles.
- 6. advances on this have increased life expectancy.
- 8. it is the most populated continent in the world.
- 11. you die from that when you have nothing to eat.