birth rate ,death rate and rate of natural growth

birth rate ,death rate and rate of natural growth 點樣計呀...一定要利用e3個.....例如:

birth rate ( )death rate= rate of natural growth 快d答呀..thx~~

2 個解答

評分
  • 1 十年前
    最愛解答

    Birth rate = (Number of births÷Total population) x 1000 %o

    Death rate = (Number of deaths÷Total population) x 1000%o

    Rate of natural growth/increase = Birth rate - Death rate

    除了你提嘅3個之外, 仲有Net migration, population change嫁!!

    Net migration = Number of immigrants - Number of emigrants

    Population change = Rate of natural growth + net migration

    Hope this can help you!!=]]

    資料來源: My geography knowledge
  • ?
    Lv 7
    1 十年前

    birth rate - death rate= rate of natural growth

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