The threat posed by some synthetic chemicals is difficult to assess because of lack of knowledge of their residence times in natural systems.

Name: The threat posed by some synthetic chemicals is difficult to assess because of lack of knowledge of their residence times in natural systems.
Brand: Quizplus
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Question

Quizplus · Accepted Answer

Synthetic chemicals can persist for a long time in natural systems, and their effects can be difficult to predict since their residence times in different environments are not well understood.

The Threat Posed by Some Synthetic Chemicals Is Difficult to Assess