01:53:26 The main factors that determine the amount of runoff in an area include the shape of the land, how people use the land, the type of soil, and: a. amount of soil and vegetation b. amount of rain and vegetation c. amount of rain and amount of soil d. amount of rain and rock formations

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.