Use the figure to answer the following question.

Looking at the data in the figure from the hare/lynx experiment, what conclusion(s) can you draw?
I. Food is a factor in controlling hare population size.
II. Excluding lynx is a factor in controlling hare population size.
III.The effect of excluding predators and adding food in the same experiment is greater than the sum of excluding lynx alone plus adding food alone.
A) only I
B) only II
C) only III
D) I, II, and III

Question

Use the figure to answer the following question.

Looking at the data in the figure from the hare/lynx experiment, what conclusion(s) can you draw?
I. Food is a factor in controlling hare population size.
II. Excluding lynx is a factor in controlling hare population size.
III.The effect of excluding predators and adding food in the same experiment is greater than the sum of excluding lynx alone plus adding food alone.
A) only I 
B) only II 
C) only III 
D) I, II, and III

Quizplus · Accepted Answer

The figure shows that the hare population size increased when lynx were excluded and when food was added. This suggests that both food availability and the presence of predators (specifically, lynx) are factors in controlling hare population size. Additionally, the fact that the effect of excluding predators and adding food together was greater than the individual effects of each factor alone suggests that these factors may have interactive effects on the hare population.

Use the Figure to Answer the Following Question