Everyday Science MCQs Biology
Q A single heart beat involves ________ stages.
  • A A. 1
  • B B. 2
  • C C. 3
  • D D. 4
Previous There are about _________ muscles in human beings.
Next Heart beats about ________ times in one’s life.
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Word of the Day
15 Jul
Iterate
perform or utter repeatedly.
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