The community knew the effects of chemical X when it was used alone.They knew the same for chemical Z, so they set safe limits for use for both chemicals.When the chemicals were released at safe levels on the same day there was a massive fish kill.The most likely explanation is
A)homeostasis
B)a synergistic interaction
C)negative feedback
D)positive feedback
E)entropy

Question

Quizplus · Accepted Answer

The fact that the chemicals caused a massive fish kill when released at safe levels suggests that there was a synergistic interaction between chemical X and Z. This means that the two chemicals combined had a greater effect than the sum of the effects of each chemical used alone, even when used at safe levels.

The Community Knew the Effects of Chemical X When It