Can animals be traced to their ancestors through fossils or DNA? Why or why not?

Describe two recent or ongoing space missions.

What enzyme is most important for dna replication and why?

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.