Brown tree snakes were accidentally carried to the island of Guam in the cargo bays of military planes after World War II. Brown tree snakes prey upon birds. There are no natural predators of brown tree snakes on Guam. Which of the following most likely happened as a result of the arrival of the brown tree snakes on Guam?
a) Forest biodiversity increased.
b) All reptile species experienced increases in population size.
c) Many bird populations disappeared, disrupting the food web on the island.
d) Immigration of new bird species decreased.