human populations

3. growth whose rate becomes ever more rapid in proportion to the growing total number or size.
5. oldest population in the world
7. the number of births per 1,000 women of child bearing age
8. new threats affecting life expectancy as population grows
9. largest population in the world
10. the average length of time that an individual is expected to live
13. the death of children under the age of one year
15. world population
19. percentage of the population at each age level in a population
21. farmland that can be used to grow crops
22. life expectancy in the US

1. movement of population from one location to another
2. the general pattern of demographic change from high birth and death rates to low birth and high death rates
4. predicted to be the most populous country in the world by 2050
6. msjor problem caused by rapid population growth
11. birth rate minus death rate
12. scientific study of human populations
14. strategy to reduce population growth
16. the percentage of newborn individual in a population that can be expected to survive to a given age
17. led to the decline in death rates around the world
18. basic facilities of a region, roads, sewers, etc
20. an increase in people living in urban areas than rural