The disease called is caused by excessive secretion of glucocorticoids, and is characterized by redistribution of body fat to produce characteristic features such as "moon face."

Directions: read the descriptions of the four islands presented in the lesson. 1. list two new traits that each new species of rat might demonstrate as it adapts to the conditions on each island. 2. introduce one of the four new rat species to another island and describe one challenge it would encounter and one success as it adapts to its new environment.