Biology Chapter 5: Population

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Across
  1. 2. Organisms that cause disease.
  2. 8. The rate at which children must be born to replace those dying in the population.
  3. 14. The study of how environmental factors affect human health and quality of life.
  4. 15. Any activity intended to improve health.
  5. 16. With the invention of this technique, lands were able to be farmed that previously could not have been.
  6. 19. The movement of individuals into an area, and is a factor that can cause a population to grow.
  7. 21. A series of improvements in industrial technology that transformed the process of manufacturing goods.
  8. 22. A factor that causes population growth to decrease.
  9. 23. Also called the Black Death and is believed to be the deadly disease that spread through Asia and Europe and killed more than a third of the people in parts of China and Europe.
  10. 24. The average number of children a woman of childbearing years would have in her lifetime, if she had children at the current rate for her country.
  11. 25. A limiting factor that depends on population size.
  12. 26. Change in a population from high birth and death rates to low birth and death rates.
  13. 27. The difference between the wealthiest and the poorest people.
  14. 28. Occurs when a population's growth slows or stops following a period of exponential growth.
  15. 29. Branch of medical science concerned with the incidence, distribution, and control of diseases that affect large numbers of people.
Down
  1. 1. Organisms that reproduce later in life, produce fewer offspring, and devote significant time and energy to the nurturing of their offspring.
  2. 3. The deliberate effort to modify a portion of Earth's surface through the cultivation of crops and the raising of livestock for sustenance or economic gain.
  3. 4. Number of individuals per unit area.
  4. 5. Maintaining a clean condition in order to promote hygiene and prevent disease.
  5. 6. The largest number of individuals that a given environment can support.
  6. 7. A limiting factor that affects all populations in similar ways, regardless of population size.
  7. 9. Eighteenth-century English economist who warned that population growth threatened future generations because, in his view, population growth would always outstrip increases in agricultural production. He suggested that human populations are regulated by war, famine, and disease.
  8. 10. Diagram of the numbers of males and females within different age groups of a population.
  9. 11. Mechanism of population control in which a population is regulated by predation.
  10. 12. Scientific study of human populations.
  11. 13. Organisms that reproduce early in life and often and have a high capacity for reproductive growth. Their offspring have small chance of surviving to maturity.
  12. 17. Occurs when the individuals in a population reproduce at a constant rate.
  13. 18. Any change, other than an injury, that disrupts the normal functions of the body.
  14. 20. The movement of individuals out of an area, is a factor that can cause a population to decrease.