-Based on the experiment in the accompanying figure, which of the following are plausible reasons for the result?
I. No nutrients evaporate now that vegetation is absent.
II. Nutrients dissolve in the water running through the watershed.
III. Nutrients are attached to small particles of sand or clay that leave the watershed.
IV. Plant roots that held soil particles in place are no longer there.
A) only I and III
B) only II and IV
C) only I, II, and IV
D) only II, III, and IV
E) only I, II, and III

Question

-Based on the experiment in the accompanying figure, which of the following are plausible reasons for the result?
I. No nutrients evaporate now that vegetation is absent.
II. Nutrients dissolve in the water running through the watershed.
III. Nutrients are attached to small particles of sand or clay that leave the watershed.
IV. Plant roots that held soil particles in place are no longer there.
A) only I and III 
B) only II and IV 
C) only I, II, and IV 
D) only II, III, and IV 
E) only I, II, and III

Quizplus · Accepted Answer

II, III, and IV are plausible reasons for the result observed in the experiment. Nutrients can dissolve in water, be attached to particles that leave the watershed, and the absence of plant roots can lead to increased erosion, all contributing to nutrient loss. Nutrients do not evaporate, making option I implausible.

-Based on the Experiment in the Accompanying Figure, Which of the Following