Passage V
Four researchers performed the following experiment to investigate changes in snowshoe hare populations in a coniferous forest over an 8 yr period.
Experiment
The researchers selected a 10 km x 10 km study area. Twenty-five 1 km x 1 km plots were then mapped out within this study area, so that none of the plots was in direct contact with another plot. Each plot was then assigned to 1 of 5 treatments, as shown in Table 1.
Each plot was surveyed during the month of April and the population density of snowshoe hares, in hares/hectare, was calculated. A hectare is 10,000 m2. Table 2 shows the average population density of the plots assigned to Treatment 1.
For each year, the researchers defined the population density ratio for a given treatment as being equal to the value of the following expression:
Figure 1 shows the population density ratio for Treatments 2-5.
24. Which of the following most likely identifies a group of animals that the researchers attempted to exclude from the plots assigned to Treatment 4 ?
Your Answer is
Correct Answer is H
Explanation
General knowledge questions.
Look at table 1, Treatment 4: each plot was cleared of mammals that prey on snowshoe hares... the mammals that preyed on hares were removed, so it should be wolves