Cannibals were not an indicator of extinction.
Researchers did not study the likelihood of extinction.
It is lower when there are a lot of cannibals.
It is higher when there are a lot of cannibals.
All ponds
Mountain meadow ponds between 2,600 and 5,000 feet
All mountain meadow ponds
Mountain meadow ponds between 5,000 and 9,600 feet
By sight
By taste
By touch
By smell
have distinctive physical traits associated with their cannibalistic behavior.
have distinctive physical traits associated with their behavior.
don't have distinctive physical traits associated with their cannibalistic behavior.
have special teeth associated with their cannibalistic behavior.
Has a wider head
Has a wider head and larger teeth
Eats other salamanders
Has larger teeth
Insects and Plants
Fish and Frogs
Aquatic crustaceans and insects
Rocks and Sand
There are no disadvantages
High incidence of disease caused by a bacterial infection
Medium incidence of disease caused by a bacterial infection
Low incidence of disease caused by a bacterial infection