Fleas and Springtails Both Lack Wings

question 2

Multiple Choice

Fleas and springtails both lack wings

• A)because they never evolved wings and are both primitive insects.
• B)because they are both parasites and lost wings from winged ancestors.
• C)fleas are primitive but springtails lost wings when they gained their springtails.
• D)springtails never had wings but fleas are derived from winged fly-like ancestors and secondarily lost wings when they became parasites.
• E)None of the choices is correct.

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Definitions:

Imperfect Competition

All market structures except pure competition; includes monopoly, monopolistic competition, and oligopoly.

Labor Demand Elasticity

The sensitivity of employers' demand for labor to changes in the price or cost of labor, reflecting how much the quantity of labor demanded responds to changes in wages.

Total Costs

The cumulative costs associated with the complete process of producing and selling a product or service.

Labor Cost

The total expenditure incurred by employers for the wages, benefits, and taxes of their workforce.