# Predicted and actual growth rate.

Assume the carrying capacity of Earth is 23 billion. Use the 1960s peak annual growth rate of 2.1% and population of 3 billion to predict the base growth rate and current growth rate with a logistic model. Assume a current population of 6.8 billion. How does the predicted growth rate compare to the actual growth rate of about 1.2% per year? i.e. Is it smaller, larger, or the same as the actual growth rate?

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Logistic Growth Rate, L = r * [1- population/(carrying capacity)] where ...

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This solution provides a calculation and comparison of predicted growth rate with actual growth rate.

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