In Clackamas, Oregon, a Stand of Hybrid Poplar Trees Was

question 8

Multiple Choice

In Clackamas, Oregon, a stand of hybrid poplar trees was planted on an area of land that is contaminated with volatile organic compounds (VOCs) . Why would someone purposely plant trees in an area with contaminated soil?

• A) to use the trees as a means of phytoremediation
• B) to use the trees as a means of eliminating insect species that consume nearby endemic plants
• C) to use the trees for lumber for houses
• D) to see if animals will make nests in trees that grow in contaminated soil.

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Definitions:

Variable Factors

Components of production that can be adjusted in the short term to change the output level, such as labor and raw materials.

Economies of Scale

A situation where the cost of producing one unit of a good decreases as the volume of production increases.

Diseconomies of Scale

The phenomenon where, beyond a certain point, the cost per unit increases as a company continues to grow in size and output.

Per-Unit Cost

The average cost for each product produced, calculated by dividing the total production costs by the total units produced.