Which of the following is not a unique characteristic of a bird?
a. most lay their eggs in the water.
b. most can fly.
c. they have feathers.
d. they walk on two legs.

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.