world population

1234567
Across
  1. 3. / average number of children for each fertile women
  2. 5. / departure migration towards another country
  3. 6. / massive demand on ressources
  4. 7. / when human demand overrun earth ressources
Down
  1. 1. / movement of persons to another country
  2. 2. / % of birth, during a year, in a population
  3. 4. / average age of death in a population