This section provides examples of exponential growth.

Population Models: Exponential, Logistic, Beverton-Holt

In order to see how exponential growth affects a population, click the link above and follow the directions below.

1. Make sure only Exponential is checked In the middle of the bottom.
2. Move the NaturalGrowth slider to 1.5.
3. Move the StartingPopulation slider to 10.
4. Click on Start and observe the graph.
5. Click on Stop once the graph is out of view.
6. Move the NaturalGrowth slider to 1.2 and see how it affects the population.
7. Move the NaturalGrowth slider to 2 and see how it affects the population.

Answer the questions below in your notes.

1. What happens when a population experiences exponential growth?
   
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   The population grows over time.
2. What is the population at the beginning of the experiment when Natural Growth was set at 1.5?
   
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   10
3. After 10 years, what was the population?
   
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   Approximately 600
4. For exponential growth to occur, the birth rate must be greater than ____ ?
   
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   1