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Population Size and Structure

Question 12 • CA-Life Science B (High School)

The golden toad was forced from its breeding sites when erratic weather caused pools to dry up. No frogs have been found in over two decades:

Answer
A
extinct species
B
endangered species
C
threatened species

Explanation

A species is considered extinct when no living individuals are known to remain. The golden toad has not been found for over two decades, so it is classified as an extinct species, not endangered or threatened.

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