ecology

First, students analyze a hypothetical example of exponential growth in the number of infected individuals.

Then, a class simulation of the spread of an infectious disease shows a trend that approximates logistic growth.

Next, students analyze examples of exponential and logistic population growth and learn about the biological processes that result in exponential or logistic population growth.

Finally, students analyze how changes in the biotic or abiotic environment can affect population size; these examples illustrate the limitations of the exponential and logistic population growth models.