Which of the following explains the role enzymes play in the process of
digestion?
a. they assure that digestion occurs within hours instead of days
b. they improve the peristaltic movement of the intestines during digestion.
c. they increase the amount of acid released from the stomach.
d. they prevent lipids from being absorbed into the blood stream

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.