Barrons AP Environmental Science

(Marvins-Underground-K-12) #1

  1. (B) To calculate doubling time, divide the growth rate into the number 70.
    Thus a growth rate of 2% (0.02) will cause a population to double in number
    in 35 years (70 ÷ 2 = 35). 2010 + 35 years = 2045.

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