Answer:
C
Explanation:
Hope this helped! -Sierra<3
<span>Zookeepers
have a difficulty of keeping koala bears alive because Koala bears are
susceptible to viral infections. There is a virus that is present to Koalas
which is called the Koala retrovirus. Koala retrovirus makes a Koala bear more
susceptible to infections and even cancer. </span>
B. the type of event that causes the extinction
Explanation:
hope this helps :)
DNA testing can be used to search for your genetic ancestors.
