Plants Are Sometimes Used for Phytoremediation in Areas Where the Soil

question 33

Multiple Choice

Plants are sometimes used for phytoremediation in areas where the soil has been contaminated with heavy metals. Suppose the Acme Remediation Company is proposing to remediate a contaminated area that you wish to restore. Acme presents you with the following data as evidence of their company's ability to remediate soil.

-The data provide evidence for which of the following?

• A) The copper removal percentage was approximately doubled by the presence of the plants used to remediate the soil.
• B) Before restoration efforts, there was twice as much lead in the soil as cadmium.
• C) Phytoremediation is especially effective at removing zinc from the soil.
• D) The most toxic product in the soil is lead.

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Definitions:

Sympathetic Nervous System

Part of the autonomic nervous system that prepares the body for quick response to stress by accelerating the heart rate and increasing blood pressure, among other functions.

Adrenal Medulla

The inner part of the adrenal glands that secretes adrenaline and noradrenaline, involved in the body's fight-or-flight response.

Hormones

Chemical messengers produced by glands in the body that regulate various functions by traveling through the bloodstream to tissues and organs.

General Adaptation Syndrome

A theoretical framework describing the body's short-term and long-term reactions to stress, consisting of three stages: alarm, resistance, and exhaustion.