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Verbal·Information and Ideas·Command of Evidence
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Effect of Neighboring Species by Type on Target Species
Neighboring speciesNeighboring species typeTarget speciesEffect value
viper’s buglossinvasivebutterfly flower-0.3312
purple loosestrifeinvasivewinged loosestrife-2.2434
Virginia spring beautynativestar chickweed0.8674
Canadian wood betonynativemayapple0.4729
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 a native plant as a “target species” and a neighboring invasive or native plant as a “neighboring species.”
Which choice best describes data from the table that support the researchers’ conclusion?
A
Both invasive species in the table have negative effect values.
B
Only one invasive species in the table has a negative effect value.
C
Only one invasive species in the table has a positive effect value.
D
Both invasive species in the table have positive effect values.