Which best describes an artery?

A) Arteries carry blood away from the heart.
B) Arteries carry oxygenated blood.
C) Arteries contain valves.
D) Arteries have thinner walls than veins.


A

Biology & Microbiology

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Which of the following pairings is not correct?

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Fecal Bacteriotherapy?

What will be an ideal response?

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________ is the study of the evolutionary relationships among a group of organisms.

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Based upon the valence numbers of the elements magnesium (2 ) and hydrogen (1 ), predict how many covalent bonds would form between these atoms to achieve the full complement of electrons in their outermost energy shells

A) one B) two C) three D) four

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