In ecological risk assessment, risk is expressed as the ratio of _________

In ecological risk assessment, risk is expressed as the ratio of _________ Correct Answer PEC to PNEC

In ecological risk assessment, risk is expressed as the ratio of predicted environmental concentration (PEC) to predicted non – effect concentration (PNEC) for a particular chemical. A (PEC / PNEC) of less than 1 implies that the risk arising from the hazard of toxicity is low or effectively zero.
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