Multiple choice

Which of the following is the best example of environmental remediation?

  1. A species of trout becomes extinct in an eutrophic lake.

  2. The annual volume of sewage flowing into a stream is decreased by one half.

  3. The height of a factory smokestack is increased.

  4. PCB-consuming bacteria are sprayed on an area that has soil contaminated with PCBs.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Generally, remediation means providing a remedy, so environmental remediation deals with the removal of pollution or contaminants from environmental media, such as soil, groundwater, sediment, or surface water for the general protection of human health and the environment or from a brownfield site intended for redevelopment. 

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