Answer:
The predicted growth rate is compared at -2%
Explanation:
To calculate growth rate, G.R = X([tex]1-\frac{Population}{Carrying capacity of earth}[/tex])
In the 1960s,
The carrying capacity of the earth = 13 billion
Earth's population = 3 billion
X = [tex]\frac{(Growth rate in 1960)}{(1-\frac{Population in 1960}{Carrying Capacity in 1960}) }[/tex]
X = [tex]0.021 (1-\frac{3,000,000,000}{13,000,000,000} )[/tex]
X = 0.021 × 0.77
X = 0.01617 = 1.6%
Current population calculation:
Growth Current population (C.p) = [tex]0.016(1-\frac{current population}{current capacity})[/tex]
Growth Current population (C.p) = 0.016[tex](1 - \frac{6,800,000,000}{3,000,000,000} )[/tex]
Growth Current population (C.p) = 0.016(-1.267)
Growth rate = -0.020272 = -2%
The predicted growth rate compare to the actual growth rate of about 1.2% per year at -2%.
