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.