If a Male White-Crowned Sparrow Is Hatched and Reared in Isolation

question 14

Multiple Choice

If a male white-crowned sparrow is hatched and reared in isolation but allowed during a critical period of imprinting (10 to 50 days after hatching) to hear the song of a male from another species,the bird most likely will

• A) Only learn the appropriate song of its own species
• B) Sing the appropriate song of the other species
• C) Try to modify the crude song it was "born with" with the other-species song and produce a unique song
• D) Not sing at all
• E) develop an abnormal song.

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Definitions:

Long-run Marginal Cost

The change in total cost when producing one additional unit of a product or service in the long term, where all inputs are considered variable.

Economies of Scale

Enterprises gain cost benefits from their operation size, as the cost for each unit produced typically drops when the scale enlarges because fixed expenses are distributed across a greater number of output units.

Efficient Scale

The level of production at which a firm can produce its product at the lowest average cost per unit.

Economies of Scale

Economies of scale describe the cost advantages that enterprises obtain due to their scale of operation, with cost per unit of output generally decreasing with increasing scale.