The graph below is of an index of diversity of arthropods in three different plots of a cornfield. In one of the three plots an insecticide was sprayed. Answer the questions below about this situation.
Arthropod diversity in three cornfield plots.
-When and where does it appear that the insecticide was applied?

Question

The graph below is of an index of diversity of arthropods in three different plots of a cornfield. In one of the three plots an insecticide was sprayed. Answer the questions below about this situation.
  Arthropod diversity in three cornfield plots.
-When and where does it appear that the insecticide was applied?

Quizplus · Accepted Answer

The diversity index in Plot 3 significantly drops in July compared to Plots 1 and 2, indicating that the insecticide was likely applied in July in Plot 3. There is no significant drop in diversity in Plots 1 or 2 that can indicate the application of insecticide.

The Graph Below Is of an Index of Diversity of Arthropods