Premise: LC50s for flow-through tests with Mysidopsis bahia and Cyprinodon variegatus were calculated two different ways -- (1) on the basis of the nominal toxicant concentrations (Nom), and (2) on the basis of measured (Meas) toxicant concentrations.

Hypothesis: Mysidopsis bahia and Cyprinodon variegatus contain toxins.
Relation: neutral