Across
- 2. A figure indicating how long, on average, a person may be expected to live.
- 4. A country with many industries and a well-developed economy.
- 6. A country that has low industrial production and little modern technology.
- 8. A period of rapid growth in the use of machines in manufacturing and production that began in the mid-1700s.
- 10. the movement of organisms from one place to another and taking up permanent or semi-permanent residence
- 13. the quality of not being harmful to the environment or depleting natural resources, and thereby supporting long-term ecological balance and providing these resources for future generations
- 14. Scientific study of human population characteristics.
- 16. An increase in the percentage and in the number of people living in urban settlements.
- 17. The fertility rate necessary for a population to replace itself.
- 18. An environmental factor that restricts population size.
- 19. The promotion of hygiene and prevention of disease by maintenance of clean conditions.
- 20. One's impact on the environment, expressed as an amount of land required to provide all of the natural resources.
Down
- 1. The total number of deaths in a year among infants under one year old for every 1,000 live births in a society.
- 3. Chart showing the distribution of individuals among different ages in a population.
- 5. The maximum size of a population once limiting factors are considered.
- 7. a group of organisms of the same species that live in a specific geographical area and interbreed
- 9. Change in a population from high birth and death rates to low birth and death rates.
- 11. An increase in the number of individuals of a population, measured using the equation: (Birth + Immigration) - (Death + Emigration)
- 12. The average number of children born to a woman during her lifetime in a population.
- 15. The spreading of residency into the outlying regions of a city.