The average life span of a red blood cell is approximately

A. 15 days.
B. 30 days.
C. 60 days.
D. 120 days.
E. 200 days.


Answer: D. 120 days.

Biology & Microbiology

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a. faith. b. authority. c. evidence. d. force. e. opinion.

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Four of the following are gorilla features. Which one is the exception?

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