Explanation When we consider the population growth from 1967 to 2017, we can summarize the data as follows. Year Total Population Increment of Population Growth rate 2017 7,550,262,101 843,843,508 12.58% 2007 6,706,418,593 795,852,298 13.46% 1997 5,910,566,295 854,930,163 16.91% 1987 5,055,636,132 826,434,875 19.54% 1977 4,229,201,257 750,147,436 21.56% 1967 3,479,053,821 In this table, the Growth rate of the population is calculated according to the formula; Growth Rate = Increment of the population Total population × 100 % Then the doubling time can be calculated as follows; T double ≈ 70 P Where, T is the doubling time and P is the growth rate. Population doubling time for 2007-2017 T double ≈ 70 P ≈ 70 12.58 % ( substituting data ) = 70 12.58 × 100 ( simplifying the percentage ) = 5.5643 × 100 ( upon dividing ) = 556.43 y e a r s ( multiplying by 100 ) Population doubling time for 1997-2007 T double ≈ 70 P ≈ 70 13.46 % ( substituting data ) = 70 13.46 × 100 ( simplifying the percentage ) = 5.2001 × 100 ( upon dividing ) = 520.01 y e a r s ( multiplying by 100 ) Population doubling time for 1987-1997 T double ≈ 70 P ≈ 70 16

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ISBN: 9780135237236

Author: Bennett

Publisher: PEARSON

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Chapter 8.B, Problem 66E

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The population growth rate and doubling time over decades from 1967 to 2017.

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Chapter 8.B, Problem 65E

Chapter 8.B, Problem 67E

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Chapter 8 Solutions

USING+UNDERSTANDING MATH.(LL)-W/MYMATH.

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Use the decibel scale to answer...Ch. 8.D - Prob. 20E Ch. 8.D - Prob. 21E Ch. 8.D - Prob. 22E Ch. 8.D - Prob. 23E Ch. 8.D - Inverse Square Law. Use the inverse square law for...Ch. 8.D - 25-32: The pH Scale. Use the pH scale to answer...Ch. 8.D - 25-32: The pH Scale. Use the pH scale to answer...Ch. 8.D - 25-32: The pH Scale. Use the pH scale to answer...Ch. 8.D - Prob. 28E Ch. 8.D - Prob. 29E Ch. 8.D - Prob. 30E Ch. 8.D - Prob. 31E Ch. 8.D - Prob. 32E Ch. 8.D - Logarithmic Thinking. Briefly describe, in words,...Ch. 8.D - 33-38: Logarithmic Thinking. Briefly describe, in...Ch. 8.D - Logarithmic Thinking. Briefly describe, in words,...Ch. 8.D - Logarithmic Thinking. Briefly describe, in words,...Ch. 8.D - Prob. 37E Ch. 8.D - Prob. 38E Ch. 8.D - 39. Sound and Distance. The decibel level for...Ch. 8.D - 40. Variation in Sound with Distance. Suppose that...Ch. 8.D - Toxic Dumping in Acidified Lakes. Consider a...Ch. 8.D - Prob. 42E Ch. 8.D - Earthquakes in the News. Find a recent news story...Ch. 8.D - Disasters. Find the death lolls for some of the...Ch. 8.D - Prob. 45E Ch. 8.D - Prob. 46E Ch. 8.D - Ocean Acidification. Research ocean acidification...

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