Periodical Cicadas Spend 13 or 17 Years

question 39

Multiple Choice

Periodical cicadas spend 13 or 17 years

• A) feeding in tree twigs before emerging as adults.
• B) feeding on tree roots before emerging as adults.
• C) as adults before laying eggs.
• D) in a resistant, resting egg before hatching as larvae.
• E) None of the choices are correct.

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Definitions:

External Cost

An uncompensated cost that an individual or firm imposes on others; also known as negative externality.

Marginal Costs

The additional financial burden incurred from producing another unit of a product or service.

External Cost

A cost incurred by a third party who did not agree to the action causing the cost.

Marginal Costs

The additional cost of producing one more unit of a product or service.