Fossil records have allowed us to identify species like the woolly mammoth, an animal found throughout Wrangel Island near the Bering Sea before it became extinct around 4500 BCE. Current figures for the number of extinct species from this period, however, are likely to be underestimates, as most extinct animals are thought to be __________: many scientists believe there are hundreds of species from this time that we have not discovered.
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Verbal·Craft and Structure·Words in Context
easyWhich choice completes the text with the most logical and precise word or phrase?
A
applicable
B
controversial
C
interconnected
D
unknown