Question 1

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By taste

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By touch

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Selected

By smell

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By sight

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Question 2

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There are no disadvantages

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Medium incidence of disease caused by a bacterial infection

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High incidence of disease caused by a bacterial infection

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Low incidence of disease caused by a bacterial infection

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Question 3

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Has a wider head and larger teeth

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Eats other salamanders

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Has a wider head

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Has larger teeth

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Question 4

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have distinctive physical traits associated with their cannibalistic behavior.

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don't have distinctive physical traits associated with their cannibalistic behavior.

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have special teeth associated with their cannibalistic behavior.

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have distinctive physical traits associated with their behavior.

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Question 5

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Mountain meadow ponds between 2,600 and 5,000 feet

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Mountain meadow ponds between 5,000 and 9,600 feet

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All ponds

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All mountain meadow ponds

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Question 6

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Fish and Frogs

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Aquatic crustaceans and insects

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Rocks and Sand

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Insects and Plants

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Question 7

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It is higher when there are a lot of cannibals.

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Researchers did not study the likelihood of extinction.

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Cannibals were not an indicator of extinction.

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It is lower when there are a lot of cannibals.

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