When does the cell have to use active transport?

Which of the following is not a food produced in rainforests? a) coffee b) cocoa c) avocados d) wheat

How can antibodies "remember" a particular bacterial invader or "antigen" on that invader?

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.