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Verbal·Information and Ideas·Command of Evidence
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Effect of Neighboring Species on Pollinator Visits to Target Species
Neighboring speciesTarget speciesEffect value
leafy spurgeLewis flax−0.3238
Himalayan balsammarsh woundwort0.7905
Canadian wood betonymayapple0.4729
Researchers Carolina Laura Morales and Anna Traveset gathered data about flowering plants growing alongside each other in various locations. In each case, the researchers identified one plant as a “target species” and a nearby plant as a “neighboring species.” The researchers then calculated a value to show how the neighboring species affected pollinator visits to the target species. The table shows that the Himalayan balsam had an effect value of __________
Which choice most effectively uses data from the table to complete the example?
A
0.7905.
B
-0.3238.
C
-3.2570.
D
0.4729.