The Army and the Environmental Protection Agency are decreasing the contamination at the Army's Aberdeen Proving Grounds by

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Planting hybrid poplar trees is a form of phytoremediation, which is the use of plants to remove or stabilize contaminants in soil. The trees are able to absorb and break down contaminants such as explosives and heavy metals, thereby reducing the level of contamination in the soil. This method is environmentally friendly and cost-effective, making it a favorable choice for remediating large areas. The other options may also be effective in decreasing contamination, but they may be more expensive and less environmentally friendly.

The Army and the Environmental Protection Agency Are Decreasing the Contamination