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In a Hypothetical Situation, a Certain Species of Flea Feeds

question 1

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In a hypothetical situation, a certain species of flea feeds only on pronghorn antelopes. In rangelands of the western United States, pronghorns and cattle often associate with one another. If some of these fleas develop a strong preference for cattle blood and mate only with other fleas that prefer cattle blood, then over time which of these should occur, if the host mammal can be considered as the fleas' habitat?
1) reproductive isolation
2) sympatric speciation
3) habitat isolation
4) prezygotic barriers


Definitions:

Relevant Range

The range of activity within which the assumptions about fixed and variable cost behaviors hold true.

Variable Cost

Costs that vary directly with the level of production or service provision, such as materials, labor, and utilities consumed in the production process.

Total Variable Cost

The sum of all costs that vary directly with the level of production or output, including materials and labor.

Period Costs

Period costs are expenses that are not directly tied to the production process and are expensed in the period they are incurred, such as selling, general, and administrative expenses.

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