The average width of the continental shelves is

a. 1 mile.
b. 10 miles.
c. 40 miles.
d. 480 miles.
e. 4800 miles.


C

Biology & Microbiology

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Which of the following traits is not seen in any species of lamprey?

a. backbone b. jaws c. oral disk with keratinized teeth d. metamorphosis

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In which of the following cases would DNA

profiling be used?

a. to reconstruct population dispersals b. to identify the remains of dead people c. to solve crimes d. to trace ethnic hertiages e. to do all of these

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Which of the following is an immature fern leaf?

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