A Population of Salamanders Live Along the Edge of a North-South

question 36

Multiple Choice

A population of salamanders live along the edge of a north-south mountain range.The populations from the east and west slope eventually join in a low northern pass and interbreed,producing fertile offspring,but they do not circle around the southern edge because of a desert barrier.When glaciers move southward,the populations are pushed south of the northern pass and are isolated.While isolated,the two populations develop enough differences over time that when the glaciers retreat north and the salamanders again share the same pass,they no longer mate at the same time,nor can they produce fertile offspring.These salamanders

• A)began as one species and therefore remain one species.
• B)were originally two species and remain two species.
• C)were originally one species but are now two species.
• D)cannot be categorized as a specific number of species from the information given.

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Definitions:

Election

The formal process of selecting a candidate for office or deciding on a proposal by casting ballots.

Certification Election

A formal process in which employees vote to determine whether they wish to be represented by a labor union.

NLRB

The National Labor Relations Board, a United States government agency responsible for enforcing US labor law in relation to collective bargaining and unfair labor practices.

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A voting process ensuring privacy and anonymity, preventing influence or retaliation, commonly used in union representation decisions.