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Question: Related to Question 1 Information: Identify the independent variable for the experimental results shown in Figure 2.
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Question: Related to Question 1 Information: Which of the following best describes the change in coyote behavior in the presence of wolves?
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Question: Final problem related to Question 1: Following the reintroduction of wolves to Yellowstone National Park, researchers measured the mean height of young aspen trees in upland and streamside areas.
Which of the following is the most likely cause of the change in mean aspen height from 1998 to 2010 ?
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Answer: B = The presence of pups is the independent variable, and the frequency of sentinel behavior is the dependent variable:
The scientists are studying the relationship between the presence of pups (independent variable) and the frequency of sentinel behavior (dependent variable).
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Answer: B = The toxin in Bt corn kills only the corn pests, leaving other insects unharmed:
Bt corn is modified to be toxic to certain insects; thus, it doesn’t require as much insecticide. The graph shows this trend.
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