1. What does the word "immune" mean as it is used in the passage? *
a:defensive
b:unaffected
:threatened
:unaware
2. Which of the phrases from the passage best helps the reader understand the meaning of "immune"? *
a:"may react defensively"
b:"these peaceful animals"
c:"can also injure or kill them"
d:"in a variety of habitats and climates"
