The radioactive decay of 14C produces ____
a. carbon 12
b. carbon 13
c. more carbon 14
d. nitrogen 14
e. oxygen 14
ANSWER: d
Biology & Microbiology
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A. true B. false
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The ____ is most like an endoskeleton
a. wooden frame of a house b. covering of a chair c. hair of a dog d. trunk of a tree e. handle of a umbrella
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Antigens bind at
a. A. b. B. c. C. d. D. e. E.
Biology & Microbiology
The first land vertebrates were the ________
Fill in the blank(s) with correct word
Biology & Microbiology