Lichens are a mix of two organisms—a fungus and an alga. the alga, by virtue of its ability to carry out photosynthesis, provides food for the fungus. the fungus, in turn, protects the alga by forming a covering over it. what kind of an interaction is being exhibited by the fungus and the alga?

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.