Approximately How Many Times Does an Average Human Heart Beat

question 92

Multiple Choice

Approximately how many times does an average human heart beat in a year?

• A) 4 × 10⁵
• B) 4 × 10⁶
• C) 4 × 10⁷
• D) 4 × 10⁸
• E) 4 × 10⁹

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