What Is the Suggested Mechanism by Which the Presence of Insecticide

Multiple Choice

What is the suggested mechanism by which the presence of insecticide influences phytoplankton abundance?

A) Periphyton abundance is reduced by insecticide.
B) Tadpoles consume phytoplankton when periphyton is reduced in abundance.
C) The reduction of zooplankton by insecticide reduces herbivory on phytoplankton, which increases abundance.
D) Inert chemicals in the insecticide include nitrogen, which promotes phytoplankton growth.