A field study on tomato growth has two groups. One receives fertilizer A, and one receives no added fertilizer. Each group has ten tomato plants. The researchers set up five plots, each with the same planting positions and same numbers per group.

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.