Bioluminescence is most commonly found among marine organisms: 70% of known luminescent species inhabit ocean environments. This trait is remarkably stable and has evolved independently in many marine species over time. Light-emitting marine species, like the Humboldt squid with its flashing light displays, exhibit accelerated diversification compared to nonluminescent relatives. This increased genetic variety among related light-emitting species further underscores bioluminescence’s crucial role in marine biodiversity and evolution.
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Verbal·Craft and Structure·Text Structure and Purpose
easyWhich choice best describes the function of the underlined portion in the text as a whole?
A
To provide a statistical comparison between two categories of bioluminescent species that is elaborated on in the rest of the text
B
To present a scientific finding that the text’s discussion of the evolutionary history of bioluminescence calls into question
C
To provide data that support an argument made in the text about a particular light-emitting ocean species
D
To support the text’s assertion that bioluminescence is associated with particular environments