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scien- need some info.

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Need some infos. that could help me answer this questions.

four factors that produce changes in population size.

  • scien- need some info. -

    What about famine, reproduction laws (as in the one child law in China), war, disease (as in the Plague), and medical breakthrus (polio, measle vaccines, and maybe someday HIV vaccine).

  • scien- need some info. -

    Migration (immigration and emigration) also affect the population size.

  • scien- need some info. -

    Ms. Sue can you please direct me to some readings on the web. thanks

  • scien- need some info. -

    Bobpursley and I have given you five answers to this question. What else do you want to know?

  • scien- need some info. -

    Rose, remember to use those terms that Ms. Sue and Bobpursley gave you as search terms -- http://www.google.com -- to find websites.

  • scien- need some info. -

    humidity and relative humidity.

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