Match the time frame listed on the left with the characteristic listed on the
right
Mesozoic era
?
Age of the dinosaurs
Paleozoic era
?
Most of Earth a desert
End of the
Mesozoic era
?
A layer of iridium
deposited all over Earth

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.