Some Plants Extract and Concentrate Heavy Metals from the Soil

question 14

Multiple Choice

Some plants extract and concentrate heavy metals from the soil. A current use for such plants is

• A)to help locate suitable sites for toxic waste storage.
• B)to concentrate rare metals for medicinal use.
• C)to minimize soil erosion in arid lands.
• D)nitrogen fixation by symbiotic bacteria in root nodules.
• E)photoremediation of polluted sites.

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