Biodiversity is the variation of life in an ecosystem. In this simulation, the terms specifically refer to a measurement of different species in an area. This simulation randomly produces an animal community within a forest. Each time the "Produce Community" button is clicked, a new set of animals populates the ecosystem. Up to 11 different animals may be part of the community. This can be used to practice quantifying biodiversity. There are provided worksheet options utilizing Simpson's Diversity Index to calculate biodiversity, as well as species richness calculation options. Check out the blog for more discussion of using this simulation and the worksheets. This post has a guide for using the version of Simpson's Diversity Index found on the AP Biology exam.